Dyfyniad APA

Cope, D. W., & Diekey, F. (1973). Cope's plastics book. Goodheart-Willcox Co.

Dyfyniad Arddull Chicago

Cope, Dwight W., and Floyd Diekey. Cope's Plastics Book. Illinois: Goodheart-Willcox Co, 1973.

Dyfyniad MLA

Cope, Dwight W., and Floyd Diekey. Cope's Plastics Book. Goodheart-Willcox Co, 1973.

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