Dyfyniad APA

WASTEWATER ENGINEERING & METCALF [et.al]. (2003). Wastewater engineering: Treatment and reuse.-- ed.4. McGraw-Hill.

Dyfyniad Arddull Chicago

WASTEWATER ENGINEERING and METCALF [et.al]. Wastewater Engineering: Treatment and Reuse.-- Ed.4. Boston: McGraw-Hill, 2003.

Dyfyniad MLA

WASTEWATER ENGINEERING and METCALF [et.al]. Wastewater Engineering: Treatment and Reuse.-- Ed.4. McGraw-Hill, 2003.

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