Sastri, M. N. (1993). Intro. to environment. Himalay.
Chicago Style aipamenaSastri, M N. Intro. to Environment. Bombay: Himalay, 1993.
MLA aipamenaSastri, M N. Intro. to Environment. Himalay, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.