Cita APA

Gramling, O., & Gramling, O. (1942). Free men are fighting: The story of world war II. New York, New York: Farrar & Rinehart.

Citación estilo Chicago

Gramling, Oliver, y Oliver Gramling. Free Men Are Fighting: The Story of World War II. New York, New York: Farrar & Rinehart, 1942.

Cita MLA

Gramling, Oliver, y Oliver Gramling. Free Men Are Fighting: The Story of World War II. New York, New York: Farrar & Rinehart, 1942.