APA (7th ed.) Citation

Edwards, R., & Cal, K. (2009). Barack Obama: United States President. Grosset & Dunlap Punlishers.

Chicago Style (17th ed.) Citation

Edwards, Roberta, and Ken Cal. Barack Obama: United States President. New York: Grosset & Dunlap Punlishers, 2009.

MLA (9th ed.) Citation

Edwards, Roberta, and Ken Cal. Barack Obama: United States President. Grosset & Dunlap Punlishers, 2009.

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