APA (7th ed.) Citation

Young, M. L., & Young, H. C. (1979). Subject directory of special libraries and information centers (5th ed.). Gale Research Co.

Chicago Style (17th ed.) Citation

Young, Margaret Labash, and Harold C. Young. Subject Directory of Special Libraries and Information Centers. 5th ed. Detroit, Mich: Gale Research Co, 1979.

MLA (9th ed.) Citation

Young, Margaret Labash, and Harold C. Young. Subject Directory of Special Libraries and Information Centers. 5th ed. Gale Research Co, 1979.