There are two options for citing sources in American Sociological Association (ASA) style. See below for more details on each option.
If you have 10 or more citations or a few citations you plan to use again, you may consider using a citation management tool such as RefWorks, so you can use & re-use them as needed (and have some extra options for organizing them and managing PDFs).
Generate bibliographies and organize PDFs with this free, open source citation management tool.
Visit Zotero.org to download Zotero and set up an account. Loyola Marymount University has created some great video tutorials on how to get started with the standalone version of Zotero on PC and how to integrate Zotero with your word processor. For getting started with Mac, view this tutorial.