Cita APA

Pickhardt, C. E., & Pickhardt, C. E. (1972). Carl Pickhardt ([1.edition].). New York, New York: Horizon Press.

Citación estilo Chicago

Pickhardt, Carl E., y Carl E. Pickhardt. Carl Pickhardt. [1.edition]. New York, New York: Horizon Press, 1972.

Cita MLA

Pickhardt, Carl E., y Carl E. Pickhardt. Carl Pickhardt. [1.edition]. New York, New York: Horizon Press, 1972.