APA
De A., . (1994). Environmental chemistry. New Delhi: Wiley Eastern Limited.
Chicago
De Anil.Kumar, . 1994. Environmental chemistry. New Delhi: Wiley Eastern Limited.
Harvard
De A., . (1994). Environmental chemistry. New Delhi: Wiley Eastern Limited.
MLA
De Anil.Kumar, . Environmental chemistry. New Delhi: Wiley Eastern Limited. 1994.