APA
Subramanian V., . (2002). Text book in Environmental science. New Delhi: Narosa Publishing House.
Chicago
Subramanian V, . 2002. Text book in Environmental science. New Delhi: Narosa Publishing House.
Harvard
Subramanian V., . (2002). Text book in Environmental science. New Delhi: Narosa Publishing House.
MLA
Subramanian V, . Text book in Environmental science. New Delhi: Narosa Publishing House. 2002.