Cita APA (7th ed.)
Goel, P. K. (2006). Water pollution: Causes, effects and control (2nd ed.). New Age International.
Cita Chicago (17th ed.)
Goel, P. K. Water Pollution: Causes, Effects and Control. 2nd ed. New Delhi: New Age International, 2006.
Cita MLA (9th ed.)
Goel, P. K. Water Pollution: Causes, Effects and Control. 2nd ed. New Age International, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.