APA (7th ed.) Citation

Hull, W. I. (1915). The Monroe Doctrine: National or international? : the problem and its solution. G.P. Putnam's Sons.

Chicago Style (17th ed.) Citation

Hull, William I. The Monroe Doctrine: National or International? : The Problem and Its Solution. New York: G.P. Putnam's Sons, 1915.

MLA (9th ed.) Citation

Hull, William I. The Monroe Doctrine: National or International? : The Problem and Its Solution. G.P. Putnam's Sons, 1915.