APA (7th ed.) Citation

De Beer, G. (1969). Hannibal: Challenging Rome's supremacy. Viking Press.

Chicago Style (17th ed.) Citation

De Beer, Gavin. Hannibal: Challenging Rome's Supremacy. New York: Viking Press, 1969.

MLA (9th ed.) Citation

De Beer, Gavin. Hannibal: Challenging Rome's Supremacy. Viking Press, 1969.