APA (7th ed.) Citation

N. S. Tiwana & V. K. Bansal. (2006). Environmental pollution and protection. Deep & deep publications.

Chicago Style (17th ed.) Citation

N. S. Tiwana and V. K. Bansal. Environmental Pollution and Protection. New Delhi: Deep & deep publications, 2006.

MLA (9th ed.) Citation

N. S. Tiwana and V. K. Bansal. Environmental Pollution and Protection. Deep & deep publications, 2006.