Cita APA (7a ed.)

Sperry, A. Call it Courage. Scholastic Inc.

Cita Chicago Style (17a ed.)

Sperry, Armstrong. Call It Courage. New York: Scholastic Inc.

Cita MLA (9a ed.)

Sperry, Armstrong. Call It Courage. Scholastic Inc.

警告：这些引文格式不一定是100％准确.