APA aipamena

Thakur, P. (2007). Environmental studies. ABD Publ.

Chicago Style aipamena

Thakur, P. Environmental Studies. Jaipur: ABD Publ, 2007.

MLA aipamena

Thakur, P. Environmental Studies. ABD Publ, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.