APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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