Cita APA (7th ed.)
De, A. K., & Kumar De, A. (2005). Environmental studies: (for B.A., B.Sc. and B.Com students) (Rev. 2nd ed.). New Age International (P) Ltd., Publishers.
Cita Chicago (17th ed.)
De, Anil K., i Arnab Kumar De. Environmental Studies: (for B.A., B.Sc. and B.Com Students). Rev. 2nd ed. New Delhi: New Age International (P) Ltd., Publishers, 2005.
Cita MLA (9th ed.)
De, Anil K., i Arnab Kumar De. Environmental Studies: (for B.A., B.Sc. and B.Com Students). Rev. 2nd ed. New Age International (P) Ltd., Publishers, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.