Citazione Stile APA (7a Edizione)

Sperry, A. (1940). Call it courage. Aladdin Paperbacks.

Citazione stile Chigago Style (17a edizione)

Sperry, Armstrong. Call It Courage. New York: Aladdin Paperbacks, 1940.

Citatione MLA (9a ed.)

Sperry, Armstrong. Call It Courage. Aladdin Paperbacks, 1940.