Dyfyniad APA

Haslam, S. (1991). River Pollution: An Ecological Perspective. CBS colllege.

Dyfyniad Arddull Chicago

Haslam, S.M. River Pollution: An Ecological Perspective. Delhi: CBS colllege, 1991.

Dyfyniad MLA

Haslam, S.M. River Pollution: An Ecological Perspective. CBS colllege, 1991.

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