APA (7th ed.) Citation

Perkins, D. (1963). A history of the Monroe doctrine. Little, Brown.

Chicago Style (17th ed.) Citation

Perkins, Dexter. A History of the Monroe Doctrine. Boston: Little, Brown, 1963.

MLA (9th ed.) Citation

Perkins, Dexter. A History of the Monroe Doctrine. Little, Brown, 1963.