Cita APA (7th ed.)
Khopkar, S. (2011). Environmental pollution analysis (2nd ed.). New Age International.
Cita Chicago (17th ed.)
Khopkar, S.M. Environmental Pollution Analysis. 2nd ed. New Delhi: New Age International, 2011.
Cita MLA (9th ed.)
Khopkar, S.M. Environmental Pollution Analysis. 2nd ed. New Age International, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.