APA
Raychaudhuri S P, Symposium on environmental pollution and toxicology (1977 : Haryana) & Gupta D S. (1979). Proceedings on environmental pollution and toxicology. New Delhi: Today and Tomorrow.
Chicago
Raychaudhuri S P, Symposium on environmental pollution and toxicology (1977 : Haryana) and Gupta D S. 1979. Proceedings on environmental pollution and toxicology. New Delhi: Today and Tomorrow.
Harvard
Raychaudhuri S P, Symposium on environmental pollution and toxicology (1977 : Haryana) and Gupta D S. (1979). Proceedings on environmental pollution and toxicology. New Delhi: Today and Tomorrow.
MLA
Raychaudhuri S P, Symposium on environmental pollution and toxicology (1977 : Haryana) and Gupta D S. Proceedings on environmental pollution and toxicology. New Delhi: Today and Tomorrow. 1979.
