Dyfyniad APA

Crawford, R. J. (2006). Plastics engineering (3rd ed.). Butterworth -Heinemann.

Dyfyniad Arddull Chicago

Crawford, R J. Plastics Engineering. 3rd ed. Woburn: Butterworth -Heinemann, 2006.

Dyfyniad MLA

Crawford, R J. Plastics Engineering. 3rd ed. Butterworth -Heinemann, 2006.

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