Dyfyniad APA

Miller, G. T. (2006). Environmental science: Working with the earth (11th ed.). Thomson Brooks/Cole Cengage Learning.

Dyfyniad Arddull Chicago

Miller, G. Tyler. Environmental Science: Working with the Earth. 11th ed. Belmont, CA ; New Delhi: Thomson Brooks/Cole Cengage Learning, 2006.

Dyfyniad MLA

Miller, G. Tyler. Environmental Science: Working with the Earth. 11th ed. Thomson Brooks/Cole Cengage Learning, 2006.

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