Bal, A. (2005). An introduction to environmental mgt. Himalaya.
Chicago Style aipamenaBal, Anand. An Introduction to Environmental Mgt. Mumbai: Himalaya, 2005.
MLA aipamenaBal, Anand. An Introduction to Environmental Mgt. Himalaya, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.