Dyfyniad APA

Mcconnell, R. (2015). Environmental Geology Today. Jones and Bartlett.

Dyfyniad Arddull Chicago

Mcconnell, R. Environmental Geology Today. Jones and Bartlett, 2015.

Dyfyniad MLA

Mcconnell, R. Environmental Geology Today. Jones and Bartlett, 2015.

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