APA (7th ed.) Zitazioa

Crow, H. L., & Trunbull, W. L. (1972). American history: A problems approach. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Zitazioa

Crow, Herman L., eta William L. Trunbull. American History: A Problems Approach. Nueva York: Holt, Rinehart and Winston, 1972.

MLA (9th ed.) Zitazioa

Crow, Herman L., eta William L. Trunbull. American History: A Problems Approach. Holt, Rinehart and Winston, 1972.