APA-ийн эшлэл(7 дахь хэвлэлт)

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.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

De, Anil K., ба 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.

MLA -ийн эшлэл (9 дэх хэвлэлт)

De, Anil K., ба Arnab Kumar De. Environmental Studies: (for B.A., B.Sc. and B.Com Students). Rev. 2nd ed. New Age International (P) Ltd., Publishers, 2005.