Dyfyniad APA

American Chemical Society. (1990). Environmental science and technology. Washington D.C.: American Chemical Society.

Dyfyniad Arddull Chicago

American Chemical Society. Environmental Science and Technology. Washington D.C.: American Chemical Society, 1990.

Dyfyniad MLA

American Chemical Society. Environmental Science and Technology. Washington D.C.: American Chemical Society, 1990.

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