APA (7th ed.) Citation

Gale Research Company, Wasserman, P., & McLean, J. W. (1973). Consultants and consulting organizations directory. Gale Research Co..

Chicago Style (17th ed.) Citation

Gale Research Company, Paul Wasserman, and Janice W. McLean. Consultants and Consulting Organizations Directory. Detroit, Mich.: Gale Research Co., 1973.

MLA (9th ed.) Citation

Gale Research Company, et al. Consultants and Consulting Organizations Directory. Gale Research Co., 1973.