APA (7th ed.) Citation

Young, M. L., Young, H. C., Kruzas, A. T., & Kruzas, A. T. (1974). Directory of special libraries and information centers. Gale Research Company.

Chicago Style (17th ed.) Citation

Young, Margaret Labash, Harold Chester Young, Anthony Thomas Kruzas, and Anthony Thomas Kruzas. Directory of Special Libraries and Information Centers. Detroit, Michigan: Gale Research Company, 1974.

MLA (9th ed.) Citation

Young, Margaret Labash, et al. Directory of Special Libraries and Information Centers. Gale Research Company, 1974.