Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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