APA Edition Citation

Ashworth, W., & Little, C. E. (2010). Encyclopedia of Environmental Studies, Viva Facts on file.

Chicago Edition Citation

Ashworth, William, and Charles E. Little. Encyclopedia of Environmental Studies, Viva Facts on File. New delhi, Viva Books, 2010.

MLA Edition Citation

Ashworth, William, and Charles E. Little. Encyclopedia of Environmental Studies, Viva Facts on File. 2010.

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