Dyfyniad APA

Porteous, A. (1996). Dictionary of environmental science and technology (2nd ed.). Wiley.

Dyfyniad Arddull Chicago

Porteous, Andrew. Dictionary of Environmental Science and Technology. 2nd ed. Onichester, Eng: Wiley, 1996.

Dyfyniad MLA

Porteous, Andrew. Dictionary of Environmental Science and Technology. 2nd ed. Wiley, 1996.

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