APA (7th ed.) Citation

Schaeffer, C. E. (1943). Three score years: A history of Phi Alpha 1883-1943.

Chicago Style (17th ed.) Citation

Schaeffer, Charles E. Three Score Years: A History of Phi Alpha 1883-1943. [Philadelphia], 1943.

MLA (9th ed.) Citation

Schaeffer, Charles E. Three Score Years: A History of Phi Alpha 1883-1943. 1943.