APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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