APA Citatie

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

Chicago Style citaat

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

MLA citatie

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

Let op: Deze citaties zijn niet altijd 100% accuraat.