Dyfyniad APA

(2003). Wastewater engineering: Treatemnt and reuse. Boston, MA: McGraw-Hill.

Dyfyniad Arddull Chicago

Wastewater Engineering: Treatemnt and Reuse. Boston, MA: McGraw-Hill, 2003.

Dyfyniad MLA

Wastewater Engineering: Treatemnt and Reuse. Boston, MA: McGraw-Hill, 2003.

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