APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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