APA-referens (7:e uppl.)
Gillespie, J. D. (2012). Challengers to duopoly: Why third parties matter in American two-party politics. University of South Carolina Press.
Chicago-referens (17:e uppl.)
Gillespie, J. David. Challengers to Duopoly: Why Third Parties Matter in American Two-party Politics. [Columbia, S.C.]: University of South Carolina Press, 2012.
MLA-referens (9:e uppl.)
Gillespie, J. David. Challengers to Duopoly: Why Third Parties Matter in American Two-party Politics. University of South Carolina Press, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.