Cita APA (7th ed.)

Knopkar,S.M. (2015). Environmental pollution: Monitoring & control:2 nd ed. New Age International.

Cita Chicago (17th ed.)

Knopkar,S.M. Environmental Pollution: Monitoring & Control:2 Nd Ed. New Delhi: New Age International, 2015.

Cita MLA (9th ed.)

Knopkar,S.M. Environmental Pollution: Monitoring & Control:2 Nd Ed. New Age International, 2015.