Dyfyniad APA

Spellman, F. R. (2021). The science of environmental pollution (Fourth edition.). CRC Press.

Dyfyniad Arddull Chicago

Spellman, Frank R. The Science of Environmental Pollution. Fourth edition. Boca Raton: CRC Press, 2021.

Dyfyniad MLA

Spellman, Frank R. The Science of Environmental Pollution. Fourth edition. CRC Press, 2021.

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