APA (7th ed.) Citation

Romulo, C. P. (1951). The United: A novel. Crown Pub.

Chicago Style (17th ed.) Citation

Romulo, Carlos Pena. The United: A Novel. New York: Crown Pub, 1951.

MLA (9th ed.) Citation

Romulo, Carlos Pena. The United: A Novel. Crown Pub, 1951.