Cita APA (7a ed.)

Cordier, R. W., & Robert, E. B. (1949). History of world peoples. Rand McNally.

Cita Chicago Style (17a ed.)

Cordier, Ralph Waldo, y E. B. Robert. History of World Peoples. New York: Rand McNally, 1949.

Cita MLA (8a ed.)

Cordier, Ralph Waldo, y E. B. Robert. History of World Peoples. Rand McNally, 1949.