APA
Viswanath H.S, . (2015). Environmental Engineering -2. New Delhi: Sapna Book House.
Chicago
Viswanath H.S, . 2015. Environmental Engineering -2. New Delhi: Sapna Book House.
Harvard
Viswanath H.S, . (2015). Environmental Engineering -2. New Delhi: Sapna Book House.
MLA
Viswanath H.S, . Environmental Engineering -2. New Delhi: Sapna Book House. 2015.