APA استشهاد

Twort, A., & Law, F. C. F. (1985). Water Supply (3rd.).

استشهاد بنمط شيكاغو

Twort, A.C, و F.M. Crowley. F.W Law. Water Supply. 3rd. New Delhi, 1985.

MLA استشهاد

Twort, A.C, و F.M. Crowley. F.W Law. Water Supply. 3rd. 1985.