Dyfyniad APA
Masters, G. M. (1998). Introduction to environmental engineering and science (2nd ed.). Prentice Hall; Pearson.
Dyfyniad Arddull Chicago
Masters, Gilbert M. Introduction to Environmental Engineering and Science. 2nd ed. Upper Saddle River, N.J. ; New Delhi: Prentice Hall; Pearson, 1998.
Dyfyniad MLA
Masters, Gilbert M. Introduction to Environmental Engineering and Science. 2nd ed. Prentice Hall; Pearson, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.