APA استشهاد

Masters, G. M. (1991). Introduction to environmental engineering and science.

استشهاد بنمط شيكاغو

Masters, Gilbert M. Introduction to Environmental Engineering and Science. Prentice - Hall of India, Pvt. ltd., New Delhi, 1991.

MLA استشهاد

Masters, Gilbert M. Introduction to Environmental Engineering and Science. 1991.