Dyfyniad APA

De, A. K. (1989). Environmental chemistry (2nd ed.). Wiley Eastern.

Dyfyniad Arddull Chicago

De, Anil Kumar. Environmental Chemistry. 2nd ed. New Delhi: Wiley Eastern, 1989.

Dyfyniad MLA

De, Anil Kumar. Environmental Chemistry. 2nd ed. Wiley Eastern, 1989.

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