Cita APA

Johri,Poonam. (2010). Environmental pollution. Sonali.

Chicago Edition Citation

Johri,Poonam. Environmental Pollution. New Delhi: Sonali, 2010.

Cita MLA

Johri,Poonam. Environmental Pollution. Sonali, 2010.

Atenció: Aquestes cites poden no estar 100% correctes.