APA (7th ed.) Citation

Garson, H. S. (2011). Oprah Winfrey: A biography (2. ed.). Greenwood.

Chicago Style (17th ed.) Citation

Garson, Helen S. Oprah Winfrey: A Biography. 2. ed. Santa Barbara, Calif. [u.a.]: Greenwood, 2011.

MLA (9th ed.) Citation

Garson, Helen S. Oprah Winfrey: A Biography. 2. ed. Greenwood, 2011.