APA (7th ed.) Citation

Sperry, A., & Guidall, G. (2013). Call it courage (Unabridged.). Recorded Books Inc..

Chicago Style (17th ed.) Citation

Sperry, Armstrong, and George Guidall. Call It Courage. Unabridged. Prince Frederick: Recorded Books Inc., 2013.

MLA (8th ed.) Citation

Sperry, Armstrong, and George Guidall. Call It Courage. Unabridged. Recorded Books Inc., 2013.

Warning: These citations may not always be 100% accurate.