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: Web of Science and Google Scholar are great ways to see connections between sources and authors, but their "cited by" lists are not comprehensive. Web of Science also includes content in both social sciences and arts and humanities.
Finding Citations in Web of Science
In Web of Science, look for the number of times an article is cited: