Cita APA (7th ed.)

De, A. K., & De, A. K. (2009). Environment and ecology. New Age International (P) Ltd., Publishers.

Cita Chicago (17th ed.)

De, Anil K., i Arnab Kumar De. Environment and Ecology. New Delhi: New Age International (P) Ltd., Publishers, 2009.

Cita MLA (9th ed.)

De, Anil K., i Arnab Kumar De. Environment and Ecology. New Age International (P) Ltd., Publishers, 2009.