Παραπομπή σε μορφή APA (7η εκδ.)

Colm, G., & Geiger, T. (1961). The Economy of the American people (2nd ed.). National Planning Association.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Colm, Gerhard, και Theodore Geiger. The Economy of the American People. 2nd ed. Washington, D.C: National Planning Association, 1961.

Παραπομπή σε μορφή MLA (9th εκδ.)

Colm, Gerhard, και Theodore Geiger. The Economy of the American People. 2nd ed. National Planning Association, 1961.