Dyfyniad APA

Haslam, S. (1991). River pollution: An ecological perspective. CBS Pub.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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