Dyfyniad APA

COLLIER'S ENCYCLOPEDIA, HALSEY, W. D. [., & JOHNSTON, B. [. (1989). Collier's encyclopedia vol.18. Macmillan Educational.

Dyfyniad Arddull Chicago

COLLIER'S ENCYCLOPEDIA, William D. [edt.] HALSEY, and Bernard [edt.] JOHNSTON. Collier's Encyclopedia Vol.18. New York: Macmillan Educational, 1989.

Dyfyniad MLA

COLLIER'S ENCYCLOPEDIA, et al. Collier's Encyclopedia Vol.18. Macmillan Educational, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.