Chikara, M. (2015). Water Pollution. APH Publishing.
Cita Chicago (17th ed.)Chikara, M.G. Water Pollution. New Delhi: APH Publishing, 2015.
Cita MLA (9th ed.)Chikara, M.G. Water Pollution. APH Publishing, 2015.
Atenció: Aquestes cites poden no estar 100% correctes.