Dyfyniad APA

(1993). Biological monitoring of aquatic systems. Boca Raton, FL: Lewis Publishing.

Dyfyniad Arddull Chicago

Biological Monitoring of Aquatic Systems. Boca Raton, FL: Lewis Publishing, 1993.

Dyfyniad MLA

Biological Monitoring of Aquatic Systems. Boca Raton, FL: Lewis Publishing, 1993.

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