Some published works have a significant impact on their own or other disciplines, while others have less influence. While there is no one way to tell what impact an article or book has had, here are some things to look at:
For a book:
For an article:
Note:The Social Sciences Citation Index and Google Scholar are great ways to see connections between sources and authors, but their "cited by" lists are not comprehensive. Also, keep in mind that the Social Sciences Citation Index focuses on that discipline and has less information on humanities sources.
Finding Citations in Social Sciences Citation Index: In this database, you can do a basic or advanced keyword search, a Cited Reference Search (to see how many times a particular article has been cited, and by whom), or an Author Search (to see how often articles by a particular author have been cited, and by whom). To find the Author Search option, click "More" on the database start page.
Try a keyword search and sort by Times Cited--highest to lowest to see the most-cited articled related to your research topic. You can click Create Citation Report or Analyze Results if you want to really dig into the data!