Module 2: Formulating a Research Question and Searching for Sources

Using Citations to Find More Sources

Besides your standard search there are additional options to identify relevant sources including searching key journals in your field, and tracking the work of relevant authors.

Another method used by researchers is to consult the citations within an article. By consulting the citations you can find relevant titles that you might have missed in your search. The advantage of this method is that you can find sources about a subject quickly and relatively easily. The disadvantage of this method is that you are searching backward, or retrospectively, so each source you find will be older than the previous one.

This is why you need to use a forward citation searching method in combination with your backward citation search. In the forward searching method, researchers use tools within databases like Google Scholar and Web of Science to see who has recently cited your source. This way you can find new and relevant sources.

Method 1: Backward Searching

In this method, review the references used in key articles. For example, search through the article for the “References” section as in Figure 2.9 below.

Example of the backward citation searching technique in PubMed. Look at the Reference section to find more articles.
Figure 2.9. Example of backward citation searching in PubMed by looking at the “References” section of an article. This screen grab from PubMed , National Library of Medicine (NLM) is included on the basis of fair dealing.

Method 2: Forward Searching

In this method, see what articles have cited your key articles. For example, search through the “Cited by” section of the article as in Figure 2.10 below.

Search result of a psychiatry article has a “cited by” link that allows users to conduct citation searching.
Figure 2.10. Example of forward citation searching in PubMed. This screen grab from PubMed , National Library of Medicine (NLM) is included on the basis of fair dealing.

Many databases will include live links to an article’s references, as well as live links to other articles that have cited that article. The following video demonstrates how to do citation searching in Google Scholar:

 

CSUDH Library. Citation Tracking. Licenced under Creative Commons CC BY 4.0.  Closed Captioned

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Advanced Research Skills: Conducting Literature and Systematic Reviews (2nd Edition) Copyright © 2021 by Kelly Dermody; Cecile Farnum; Daniel Jakubek; Jo-Anne Petropoulos; Jane Schmidt; and Reece Steinberg is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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