Παραπομπή σε μορφή APA (7η εκδ.)

Clark, H. F., & Crobaugh, M. (1937). Life earnings in selected occupations in the United States. Harper & Brothers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Clark, Harold Florian, και Mervyn Crobaugh. Life Earnings in Selected Occupations in the United States. New York and London: Harper & Brothers, 1937.

Παραπομπή σε μορφή MLA (8th εκδ.)

Clark, Harold Florian, και Mervyn Crobaugh. Life Earnings in Selected Occupations in the United States. Harper & Brothers, 1937.