Kumar, P. (2007). Ecology and human well being. Sage.
Chicago Style aipamenaKumar, Pushpam. Ecology and Human Well Being. New Delhi: Sage, 2007.
MLA aipamenaKumar, Pushpam. Ecology and Human Well Being. Sage, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.