APA استشهاد

Crawford, R. (1998). Plastics engineering (3rd ed.). Heinemann.

استشهاد بنمط شيكاغو

Crawford, R.J. Plastics Engineering. 3rd ed. Butterworth: Heinemann, 1998.

MLA استشهاد

Crawford, R.J. Plastics Engineering. 3rd ed. Heinemann, 1998.