APA-referens (7:e uppl.)
Shull, S. A. (2006). Policy by other means: Alternative adoption by presidents. Texas A&M University Press.
Chicago-referens (17:e uppl.)
Shull, Steven A. Policy by Other Means: Alternative Adoption by Presidents. College Station: Texas A&M University Press, 2006.
MLA-referens (9:e uppl.)
Shull, Steven A. Policy by Other Means: Alternative Adoption by Presidents. Texas A&M University Press, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.