APA
M G Chitkara, . (1998). Encyclopaedia of Ecology, Environment and Pollution : vol.X : the Water (prevention and control of pollution) Act, 1974 .-81-7024-890-6. APH, New Delhi: .
Chicago
M G Chitkara, . 1998. Encyclopaedia of Ecology, Environment and Pollution : vol.X : the Water (prevention and control of pollution) Act, 1974 .-81-7024-890-6. APH, New Delhi: .
Harvard
M G Chitkara, . (1998). Encyclopaedia of Ecology, Environment and Pollution : vol.X : the Water (prevention and control of pollution) Act, 1974 .-81-7024-890-6. APH, New Delhi: .
MLA
M G Chitkara, . Encyclopaedia of Ecology, Environment and Pollution : vol.X : the Water (prevention and control of pollution) Act, 1974 .-81-7024-890-6. APH, New Delhi: . 1998.