Dyfyniad APA

(1985). Collier's encyclopedia with bibliography and index. Macmillan Educational.

Dyfyniad Arddull Chicago

Collier's Encyclopedia with Bibliography and Index. New York: Macmillan Educational, 1985.

Dyfyniad MLA

Collier's Encyclopedia with Bibliography and Index. Macmillan Educational, 1985.

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