Cita APA

Fry, R. 1., & Clark, K. 1. (1939). Last lectures. New York: The Macmillan Company.

Citación estilo Chicago

Fry, Roger 1866-1934, y Kenneth 1903-1983 Clark. Last Lectures. New York: The Macmillan Company, 1939.

Cita MLA

Fry, Roger 1866-1934, y Kenneth 1903-1983 Clark. Last Lectures. New York: The Macmillan Company, 1939.