Provided by SU Libraries: EasyBib Academic Edition
You always have the most control over the accuracy of your citations when you do it by hand using the selected style manual (below).
For writing assistance, stop by the University Writing Center, located on the second floor of the Guerrieri Academic Commons.
Purdue OWL: Formatting in ASA - references and in-text citation help
American Sociological Association - quick tips for ASA style as a pdf
From the Purdue OWL site, for APA:
Point readers to raw data by providing a Web address (use "Retrieved from") or a general place that houses data sets on the site (use "Available from").
For example:
United States Department of Housing and Urban Development. (2008). Indiana income limits [Data file]. Retrieved from http://www.huduser.org/Datasets/IL/IL08/in_fy2008.pdf