APA
Chopra/Kanchan & Others, . (2001). Ecological Economics. New Delhi: Academic Faundation.
Chicago
Chopra/Kanchan & Others, . 2001. Ecological Economics. New Delhi: Academic Faundation.
Harvard
Chopra/Kanchan & Others, . (2001). Ecological Economics. New Delhi: Academic Faundation.
MLA
Chopra/Kanchan & Others, . Ecological Economics. New Delhi: Academic Faundation. 2001.