Dyfyniad APA
Metcalf & Reddy. (2003). Wastewater engineering: Treatment and reuse (4th ed.). Tata McGraw-Hill.
Dyfyniad Arddull Chicago
Metcalf and Reddy. Wastewater Engineering: Treatment and Reuse. 4th ed. New Delhi: Tata McGraw-Hill, 2003.
Dyfyniad MLA
Metcalf and Reddy. Wastewater Engineering: Treatment and Reuse. 4th ed. Tata McGraw-Hill, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.