Dyfyniad APA

Crites, R. (1998). Small and decentralized wastewater management systems. WCB/McGraw-Hill.

Dyfyniad Arddull Chicago

Crites, Ron. Small and Decentralized Wastewater Management Systems. WCB/McGraw-Hill, 1998.

Dyfyniad MLA

Crites, Ron. Small and Decentralized Wastewater Management Systems. WCB/McGraw-Hill, 1998.

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