Dyfyniad APA

Bennet, M. R., & Doyle, P. (1997). Environmental geology: : geology and human environment. John Wiley.

Dyfyniad Arddull Chicago

Bennet, Mathew R., and Peter Doyle. Environmental Geology: : Geology and Human Environment. Chichester: John Wiley, 1997.

Dyfyniad MLA

Bennet, Mathew R., and Peter Doyle. Environmental Geology: : Geology and Human Environment. John Wiley, 1997.

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