Ashish Ghosh. (2008). Environmental conservation: Challenges & actions. APH.
Chicago Style aipamenaAshish Ghosh. Environmental Conservation: Challenges & Actions. New Delhi: APH, 2008.
MLA aipamenaAshish Ghosh. Environmental Conservation: Challenges & Actions. APH, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.