Dyfyniad APA

Metcalf & Eddy., Burton, F. L. 1., Stensel, H. D., & Tchobanoglous, G. (2003). Wastewater engineering: Treatment and reuse (4th ed.). Boston: McGraw-Hill.

Dyfyniad Arddull Chicago

Metcalf & Eddy., Franklin L. 1927- Burton, H. David Stensel, và George Tchobanoglous. Wastewater Engineering: Treatment and Reuse. 4th ed. Boston: McGraw-Hill, 2003.

Dyfyniad MLA

Metcalf & Eddy., Franklin L. 1927- Burton, H. David Stensel, và George Tchobanoglous. Wastewater Engineering: Treatment and Reuse. 4th ed. Boston: McGraw-Hill, 2003.

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