APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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