Dyfyniad APA
Sawyer, C. N., McCarty, P. L., & Parkin, G. F. (2003). Chemistry for environmental engineering and science (5th ed.). Mc Graw -Hill.
Dyfyniad Arddull Chicago
Sawyer, Clair N., Perry L. McCarty, and Gene F. Parkin. Chemistry for Environmental Engineering and Science. 5th ed. Chennai: Mc Graw -Hill, 2003.
Dyfyniad MLA
Sawyer, Clair N., et al. Chemistry for Environmental Engineering and Science. 5th ed. Mc Graw -Hill, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.