Key, V. O. (1952). Politics, parties, and presure groups. New York: Thomas Y Crowell Company.
Chicago-stil citatKey, V. O. Politics, Parties, and Presure Groups. New York: Thomas Y Crowell Company, 1952.
MLA-referensKey, V. O. Politics, Parties, and Presure Groups. New York: Thomas Y Crowell Company, 1952.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.