APA (7th ed.) Citation

McCollough, E. F., Van Buren, M., & Stearns, L. E. (1931). Essentials in library administration (4th ed. rev.). American Library Administration.

Chicago Style (17th ed.) Citation

McCollough, Ethel Farquhar, Maud Van Buren, and Lutie Eugenia Stearns. Essentials in Library Administration. 4th ed. rev. Chicago: American Library Administration, 1931.

MLA (8th ed.) Citation

McCollough, Ethel Farquhar, et al. Essentials in Library Administration. 4th ed. rev. American Library Administration, 1931.