APA (7th ed.) Citation

Ryan, J. A. (1940). Catholic principles of politics. Macmillan.

Chicago Style (17th ed.) Citation

Ryan, John Augustine. Catholic Principles of Politics. New York: Macmillan, 1940.

MLA (9th ed.) Citation

Ryan, John Augustine. Catholic Principles of Politics. Macmillan, 1940.

Warning: These citations may not always be 100% accurate.