APA (7th ed.) Citation

Winkler, J. K. (1929). John D: A portrait in oils. Vanguard Press.

Chicago Style (17th ed.) Citation

Winkler, John Kennedy. John D: A Portrait in Oils. New York: Vanguard Press, 1929.

MLA (9th ed.) Citation

Winkler, John Kennedy. John D: A Portrait in Oils. Vanguard Press, 1929.