Chopra, K., & ...[et al.]. (2001). Ecological economics for sustainable development. Academic Foundation.
Chicago Style aipamenaChopra, Kanchan, and ...[et al.]. Ecological Economics for Sustainable Development. Ghaziabad: Academic Foundation, 2001.
MLA aipamenaChopra, Kanchan, and ...[et al.]. Ecological Economics for Sustainable Development. Academic Foundation, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.