APA (7th ed.) Citation

Walters, F. P. (1960). A history of the League of Nations. Oxford University Press.

Chicago Style (17th ed.) Citation

Walters, Francis Paul. A History of the League of Nations. London: Oxford University Press, 1960.

MLA (9th ed.) Citation

Walters, Francis Paul. A History of the League of Nations. Oxford University Press, 1960.