Dyfyniad APA

vanLoon , G. W., & Duffy , S. J. (2000). Environmental chemistry: A global perspective. University press.

Dyfyniad Arddull Chicago

vanLoon , Gary W., and Stephen J. Duffy. Environmental Chemistry: A Global Perspective. Oxford: University press, 2000.

Dyfyniad MLA

vanLoon , Gary W., and Stephen J. Duffy. Environmental Chemistry: A Global Perspective. University press, 2000.

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