APA (7th ed.) Citation

Perkins, D. (1955). A history of the Monroe doctrine (New ed.). Little, Brown.

Chicago Style (17th ed.) Citation

Perkins, Dexter. A History of the Monroe Doctrine. New ed. Boston: Little, Brown, 1955.

MLA (9th ed.) Citation

Perkins, Dexter. A History of the Monroe Doctrine. New ed. Little, Brown, 1955.