APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

Johri,Poonam. Environmental Pollution. Sonali, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.