Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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