Παραπομπή σε μορφή APA (7η εκδ.)

Rugg, H. (1929). An introduction to American civilization: A study of economic life in the United States. Ginn and Company.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Rugg, Harold. An Introduction to American Civilization: A Study of Economic Life in the United States. Boston: Ginn and Company, 1929.

Παραπομπή σε μορφή MLA (9th εκδ.)

Rugg, Harold. An Introduction to American Civilization: A Study of Economic Life in the United States. Ginn and Company, 1929.