APA (7th ed.) Citation

Special Libraries Association, Vormelker, R. L., & Towner, I. L. (1941). Special library resources. Special libraries association.

Chicago Style (17th ed.) Citation

Special Libraries Association, Rose L. Vormelker, and Isabel L. Towner. Special Library Resources. New York: Special libraries association, 1941.

MLA (9th ed.) Citation

Special Libraries Association, et al. Special Library Resources. Special libraries association, 1941.