APA (7th ed.) Citation

Special Libraries Association & Cavanaugh, E. S. (1935). Special libraries directory of the United States and Canada. Special libraries association.

Chicago Style (17th ed.) Citation

Special Libraries Association and E. S. Cavanaugh. Special Libraries Directory of the United States and Canada. New York: Special libraries association, 1935.

MLA (9th ed.) Citation

Special Libraries Association and E. S. Cavanaugh. Special Libraries Directory of the United States and Canada. Special libraries association, 1935.