Cita APA (7a ed.)

Kruzas, A. T. (1968). Directory of special libraries and infrmation centers. 2ed (2ed.). Gale research.

Cita Chicago Style (17a ed.)

Kruzas, Anthony T. Directory of Special Libraries and Infrmation Centers. 2ed. 2ed. Michigan - EEUU: Gale research, 1968.

Cita MLA (8a ed.)

Kruzas, Anthony T. Directory of Special Libraries and Infrmation Centers. 2ed. 2ed. Gale research, 1968.