APA aipamena

Aditya Bhatnagar. (2010). Principles of environmental studies. Oxford Book Company ;Jaipur.

Chicago Style aipamena

Aditya Bhatnagar. Principles of Environmental Studies. Oxford Book Company ;Jaipur, 2010.

MLA aipamena

Aditya Bhatnagar. Principles of Environmental Studies. Oxford Book Company ;Jaipur, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.