Cita APA

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

Citación estilo Chicago

Crow, Herman L., y William L. Turnbull. American History: A Problems Approach. New York, New York: Holt, Rinehart and Winston, 1972.

Cita MLA

Crow, Herman L., y William L. Turnbull. American History: A Problems Approach. New York, New York: Holt, Rinehart and Winston, 1972.