Cita APA

Heinrichs, W. H. (1989). Threshold of war: Franklin D. Roosevelt and American entry into World War II. New York: Oxford University Press.

Citación estilo Chicago

Heinrichs, Waldo H. Threshold of War: Franklin D. Roosevelt and American Entry Into World War II. New York: Oxford University Press, 1989.

Cita MLA

Heinrichs, Waldo H. Threshold of War: Franklin D. Roosevelt and American Entry Into World War II. New York: Oxford University Press, 1989.