APA (7th ed.) Citation

Winfrey, O. (2014). What i know for sure (Unabridged.). Macmillan Audio.

Chicago Style (17th ed.) Citation

Winfrey, Oprah. What I Know for Sure. Unabridged. New York: Macmillan Audio, 2014.

MLA (8th ed.) Citation

Winfrey, Oprah. What I Know for Sure. Unabridged. Macmillan Audio, 2014.

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