Dyfyniad APA

Sawyer, C. N. (1994). Chemistry for environmental engineering. (4th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Sawyer, Clair N. Chemistry for Environmental Engineering. 4th ed. New York: McGraw-Hill, 1994.

Dyfyniad MLA

Sawyer, Clair N. Chemistry for Environmental Engineering. 4th ed. McGraw-Hill, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.