Dyfyniad APA

ROBERT A MEYERS. (1999). Encyclopedia of environmental pollution and cleanup. New York: John Wiley and Sons.

Dyfyniad Arddull Chicago

ROBERT A MEYERS. Encyclopedia of Environmental Pollution and Cleanup. New York: John Wiley and Sons, 1999.

Dyfyniad MLA

ROBERT A MEYERS. Encyclopedia of Environmental Pollution and Cleanup. New York: John Wiley and Sons, 1999.

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