APA Citation

Winfrey. (2014). What I know for sure. New York: Flatiron Books.

Chicago Style Citation

Winfrey. What I Know for Sure. New York: Flatiron Books, 2014.

MLA Citation

Winfrey. What I Know for Sure. New York: Flatiron Books, 2014.

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