APA-referens (7:e uppl.)
Gray, V., Lowery, D., & Benz, J. K. (2013). Interest groups and health care reform across the United States. Georgetown University Press.
Chicago-referens (17:e uppl.)
Gray, Virginia, David Lowery, och Jennifer K. Benz. Interest Groups and Health Care Reform Across the United States. Washington, D.C.: Georgetown University Press, 2013.
MLA-referens (9:e uppl.)
Gray, Virginia, et al. Interest Groups and Health Care Reform Across the United States. Georgetown University Press, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.