APA (7th ed.) Citation

Phi Beta Kappa. (1941). Phi beta kappa directory, 1776-1941. The United chapters of Phi beta kappa.

Chicago Style (17th ed.) Citation

Phi Beta Kappa. Phi Beta Kappa Directory, 1776-1941. New York, N.Y.: The United chapters of Phi beta kappa, 1941.

MLA (9th ed.) Citation

Phi Beta Kappa. Phi Beta Kappa Directory, 1776-1941. The United chapters of Phi beta kappa, 1941.