Cita APA (7th ed.)

COLLIER'S ENCYCLOPEDIA, HALSEY, W. D. [., & JOHNSTON, B. [. E. (1989). Collier's encyclopedia vol.1. Macmillan Educational Co.

Cita Chicago (17th ed.)

COLLIER'S ENCYCLOPEDIA, William D. [Edt.] HALSEY, i Bernard [ Edt.] JOHNSTON. Collier's Encyclopedia Vol.1. New York: Macmillan Educational Co, 1989.

Cita MLA (9th ed.)

COLLIER'S ENCYCLOPEDIA, et al. Collier's Encyclopedia Vol.1. Macmillan Educational Co, 1989.