How to look for literature for a diploma thesis?

Keyword map

Break down the topic into main concepts, population, context, and possible method. For each of them, prepare synonyms, broader and narrower terms and English equivalents.

Combine passwords in different configurations. A query that is too long may miss valuable publications, so start broader and then narrow down your results.

Where to look for publications?

Google Scholar helps you find articles and track citations. The library catalog leads to books and licensed access, and subject databases provide better filters and reliable records.

Check the remote access offered by the university and open repositories. The lack of full text in the first result does not mean that the publication is unavailable in another way.

The one good article method

Once you find a relevant publication, review its bibliography to find previous research. Then use the "cited by" function to find more recent works.

This backward and forward search builds a literature network more effectively than randomly opening results. However, you still need to check whether each source addresses its own problem.

Evaluation and organization of sources

Check the author, place of publication, date, method, attempt and relevance to the topic. A high citation count may indicate impact, but is not a substitute for critical evaluation of the content.

Keep a table with a full description, main conclusion, method used and place of use in the work. The bibliography manager will help you store files and prepare footnotes.

Write down selection criteria before downloading your first source

A literature search for a master's thesis becomes more organised when you first record which publications can actually answer your research question. In a teaching example concerning first-year students' adjustment, criteria might include the group studied, the type of experience and the university environment. An article about employee training does not become a relevant source simply because it contains the word 'adjustment'. Also establish whether you need empirical studies, reviews, theoretical texts or institutional documents. Each type of material can serve a different purpose in the chapter. Record why you rejected a source, particularly when its title looked promising. A brief note such as 'different population' will prevent you from reading the same abstract again. You can refine your criteria after exploring the literature, but retain a record of the change and its justification.

Keep a log of searches and results

Create a simple search log containing the date, database name, full query and information about useful results. It need not resemble the documentation for an extensive systematic review. Its purpose is to show what you have already searched for and which combinations of concepts remain unexplored. Teaching example: after searching for the Polish phrase 'adaptacja studentów' (student adjustment), you can separately check 'poczucie przynależności studentów' and the English phrase 'student belonging'. Do not assume that Polish and English search terms cover identical meanings. When describing concepts, compare the definitions used by the authors. If results are very broad, add a context or group; if they almost disappear, remove the most specific condition. Change one element at a time so you know which adjustment helped. Keep a record of the query, rather than only the number of downloaded files.

Read each publication in two passes

The first reading establishes relevance. Check the question, material, method and main result before spending an hour on all the footnotes. The second pass should be more detailed: mark definitions, study conditions, limitations and passages suitable for comparison with other sources. Do not mechanically summarise the entire article. Above all, record the answer to the question 'What will I use this publication for in my thesis?'. A useful note identifies a specific subsection and the source's role: a definition, an application example, a different finding or a methodological limitation. Separate a direct quotation from your own summary and add the page number immediately. If a publication's method is unclear, record your concern instead of treating its conclusion as equally strong as the result of a well-described study. This selection saves time when writing.

Connect sources in a map of positions

A list of books you have read is not yet a literature review. Prepare a table in which rows represent publications and columns represent common issues: the definition of the problem, study group, method and conclusions. An empty field may mean that the author did not analyse that issue, rather than that they obtained the opposite result. In a teaching example, two publications on student participation might measure different things: class attendance and a sense of engagement. Their results should not be directly set against each other. First explain the difference in operationalisation. Only then look for agreement and tensions between the positions. A theoretical chapter organised around problems is easier to connect to your own research than a series of separate summaries. For every synthesis statement, retain references to the publications that actually support it.

Recognise when to finish the search

You do not need to download every publication containing a keyword. Before moving on to writing, check whether you have material covering all important concepts, the main positions and the method of your planned study. Mark gaps you could not fill and limitations on access to full texts. The same authors appearing repeatedly may suggest that you have identified the core literature, but this is not automatic proof of completeness. Also check alternative terms for the phenomenon and sources that challenge the dominant view. Then schedule a search update instead of interrupting every paragraph with another search. Before submitting your thesis, it is worth revisiting topics that change particularly quickly. Describe the scope of the review honestly: an ordinary narrative review should not be called systematic simply because you used a table of sources.

Summary

Good querying is a process that can be repeated and documented. Combine Polish and English keywords, use catalogues, databases and citation networks, and evaluate each source in terms of its relevance to the problem and credibility. Organizing your publications from day one allows you to quickly see the main positions, gaps and the place of your work in the existing knowledge.