APA (7th ed.) Citation

Winfrey, O., & Lowe, J. (1998). Oprah Winfrey speaks: Insight from the world's most influential voice. Wiley.

Chicago Style (17th ed.) Citation

Winfrey, Oprah, and Janet Lowe. Oprah Winfrey Speaks: Insight from the World's Most Influential Voice. New York: Wiley, 1998.

MLA (9th ed.) Citation

Winfrey, Oprah, and Janet Lowe. Oprah Winfrey Speaks: Insight from the World's Most Influential Voice. Wiley, 1998.