Cita APA (7th ed.)

Wedgeworth, R. (1993). World encyclopedia of library and information services (3rd ed.). American Library Association.

Cita Chicago (17th ed.)

Wedgeworth, Robert. World Encyclopedia of Library and Information Services. 3rd ed. Chicago: American Library Association, 1993.

Cita MLA (8th ed.)

Wedgeworth, Robert. World Encyclopedia of Library and Information Services. 3rd ed. American Library Association, 1993.