JSTOR is a multidisciplinary database, but it is known for its strength in the humanities.You should be aware that the majority of its content is not completely current; most publishers do not release their content to JSTOR until between three and five years after publication.
Be aware, too, that JSTOR offers a number of different subscription options, and not all content is available to all subscribers. When performing a citation search, check the boxes for both "include only content I can access" and "include links to external content." This will give you the most complete results. However, keep in mind that you may not be able to access the full text of all the results you get.
JSTOR offers two options for citation searching:
1. If a document is cited by other documents within JSTOR, you will see a link in the upper right corner: [N] items citing this item. Clicking on the link will bring you to a list of those citations.
2. In theory, you can also use JSTOR to search for citing articles, related articles, or other works by the same author through Google Scholar.
This is useful, because it will find citing articles that are not in the JSTOR index. However, as of Summer 2014 this option still does not work properly for all articles. JSTOR claims they are working on the problem, but for now it’s best to search for citations to JSTOR articles directly in Google Scholar, rather than through the JSTOR interface.