APA (7th ed.) Citation

Sumner, W. G., Keller, A. G., & Davie, M. R. (1924). Selected essays of William Graham Sumner. Yale university press.

Chicago Style (17th ed.) Citation

Sumner, William Graham, Albert Galloway Keller, and Maurice R. Davie. Selected Essays of William Graham Sumner. New Haven: Yale university press, 1924.

MLA (9th ed.) Citation

Sumner, William Graham, et al. Selected Essays of William Graham Sumner. Yale university press, 1924.