Key points at a glance
- Backward searching follows a source’s reference list.
- Forward searching identifies later papers that cite the source.
- Apply the same eligibility criteria to citation and database results.
What is citation chaining?
Citation chaining uses connections between publications to discover further literature. A backward search follows references in a starting paper. A forward search identifies publications that cite it. These directions answer different questions: what did the paper build on, and who subsequently responded to it?
The approach complements a topic-based database search. It can help when researchers use different terms for related ideas. However, a single chain can miss other research traditions, languages or emerging approaches that are not connected to your starting sources.
Choose useful starting publications
Select several relevant starting papers with different perspectives where possible. A recent review can provide orientation, while an original study offers a more direct route to methods and data. Justify your choices through relevance to the question rather than citation counts alone.
Original example: For a project about feedback in online seminars, a review may lead to earlier concepts while a recent empirical paper reveals current applications. If both mainly cite the same research group, look for additional independent starting points.
Search in both directions
First inspect the starting paper’s references and identify potentially relevant titles. Obtain and read the original publications. Do not transfer claims or bibliographic details without checking: the cited paper may address a narrower issue or make a different argument from the summary you encountered.
For forward searching, Google Scholar offers “Cited by”. Its help distinguishes this function from “Related articles”. A related result suggests similarity; it does not establish that one publication cites the other. Keep that distinction clear in your search records.
Document the paths and their limits
Record the starting publication, direction, search system, date and relevant discoveries. Distinguish records found from genuinely new publications after deduplication. The same study may appear through several starting papers and should not be counted repeatedly.
Define how far you will follow the chains, for example one round for all selected starting studies and a justified additional round. Apply consistent selection criteria. If time limits the search, explain that boundary instead of claiming comprehensive coverage.
Read newly discovered disagreements carefully. A citation can indicate agreement, methodological borrowing or criticism. You need the surrounding text to determine how the cited work is actually being used.
Final submission context
Formal details can feel like a separate writing task, but they matter just as much for a printed submission. Anything missing, misplaced or inconsistently formatted in the document will also appear in the bound copy.
Use this guide together with your cover page, table of contents, page numbers, source notes and appendices. Prepare the final PDF for printing and binding only after the complete file has been checked.
Practical check before PDF export
- Do headings, chapter structure and page numbers match?
- Are sources, figures and tables included completely?
- Are required elements such as declarations, appendices or the cover page included where required?
- Did you open and check the final PDF after exporting it?
Checklist
- Justify several suitable starting sources.
- Distinguish backward and forward searches.
- Read the original publications.
- Record search paths and dates.
- Document duplicates and stopping limits.
Common mistakes
- Following only one research group’s citation network.
- Treating high citation counts as a quality guarantee.
- Repeating a cited claim without checking its original source.
Print and bind your finished thesis
Once you have checked the content and final PDF, configure the printed copies to match your submission requirements.
Configure printing and bindingRelated content
Explore related guidance on thesis structure, sources, formatting and final submission.
Frequently asked questions
Is citation chaining a systematic method?
It can form part of a systematic search when starting sources, search paths and selection rules are transparent. The name alone does not make a search systematic or complete.
How many rounds should I run?
Your question and method determine the scope. Set a justified boundary and record any extensions. A clear limit is more defensible than an open-ended search with no usable record.
Can citation chaining replace database searching?
Only where your methodology justifies that choice. Combining the approaches often works better because citation-only searching can miss disconnected publications.