Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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