Cita APA (7a ed.)

American Foundations Information Service & Rich, W. S. (1955). American foundations and their fields (7th ed.). American Foundations Information Service.

Cita Chicago Style (17a ed.)

American Foundations Information Service y Wilmer Shields Rich. American Foundations and Their Fields. 7th ed. New York: American Foundations Information Service, 1955.

Cita MLA (9a ed.)

American Foundations Information Service y Wilmer Shields Rich. American Foundations and Their Fields. 7th ed. American Foundations Information Service, 1955.