APA-referens (7:e uppl.)

Hallett, G. H., & Hoag, C. G. (1940). Proportional representation, the key to democracy (2d and rev. ed., 1940.). National municipal league.

Chicago-referens (17:e uppl.)

Hallett, George Hervey, och Clarence Gilbert Hoag. Proportional Representation, the Key to Democracy. 2d and rev. ed., 1940. New York city: National municipal league, 1940.

MLA-referens (8:e uppl.)

Hallett, George Hervey, och Clarence Gilbert Hoag. Proportional Representation, the Key to Democracy. 2d and rev. ed., 1940. National municipal league, 1940.