Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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