Dyfyniad APA

Cunningham, W. P. (2006). Principles of environmental science inquiry and applications. McGraw-Hill.

Dyfyniad Arddull Chicago

Cunningham, William P. Principles of Environmental Science Inquiry and Applications. McGraw-Hill, 2006.

Dyfyniad MLA

Cunningham, William P. Principles of Environmental Science Inquiry and Applications. McGraw-Hill, 2006.

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