APA (7th ed.) Citation

Ashworth, W. (2006). Encyclopedia of environmental studies. Viva Books private limited.

Chicago Style (17th ed.) Citation

Ashworth, William. Encyclopedia of Environmental Studies. New Delhi: Viva Books private limited, 2006.

MLA (9th ed.) Citation

Ashworth, William. Encyclopedia of Environmental Studies. Viva Books private limited, 2006.

Warning: These citations may not always be 100% accurate.