Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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