APA Style

Edwards, Roberta, O'Brien, John. (2012). Who is Barack Obama? . New York: Grosset & Dunlap.

Chicago Style

Edwards, Roberta, O'Brien, John. Who is Barack Obama?. New York: Grosset & Dunlap, 2012. Text.

MLA Style

Edwards, Roberta, O'Brien, John. Who is Barack Obama?. New York: Grosset & Dunlap, 2012. Text.

Turabian Style

Edwards, Roberta, O'Brien, John. Who is Barack Obama?. New York: Grosset & Dunlap, 2012. Print.