Cita APA

Warntz, W., & Wolff, P. (1971). Breakthrough in geography. New York: Plume Book.

Citación estilo Chicago

Warntz, William, y Peter Wolff. Breakthrough in Geography. New York: Plume Book, 1971.

Cita MLA

Warntz, William, y Peter Wolff. Breakthrough in Geography. New York: Plume Book, 1971.

Precaución: Estas citas no son 100% exactas.