APA (7th ed.) Zitazioa

Hunt Charles B. (1967). Physiography of the United states. Freeman.

Chicago Style (17th ed.) Zitazioa

Hunt Charles B. Physiography of the United States. San Francisco: Freeman, 1967.

MLA (9th ed.) Zitazioa

Hunt Charles B. Physiography of the United States. Freeman, 1967.