APA (7e ed.) Bronvermelding

Bhatnagar Aditya. (2010). Principles of environmental studies. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Bhatnagar Aditya. Principles of Environmental Studies. Delhi: Oxford University Press, 2010.

MLA (9e ed.) Bronvermelding

Bhatnagar Aditya. Principles of Environmental Studies. Oxford University Press, 2010.

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