Dyfyniad APA

Mac Gregor, E., & Greenwood, C. (1980). Polymers in nature. John wiley.

Dyfyniad Arddull Chicago

Mac Gregor, E.A, and C.T Greenwood. Polymers in Nature. Chichester: John wiley, 1980.

Dyfyniad MLA

Mac Gregor, E.A, and C.T Greenwood. Polymers in Nature. John wiley, 1980.

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