Dyfyniad APA

Kumra, V. K., Nag, P., & Singh, J. (1997). Geography and environment. Concept Publishing.

Dyfyniad Arddull Chicago

Kumra, V. K., Prithvish Nag, and Jagdish Singh. Geography and Environment. New Delhi: Concept Publishing, 1997.

Dyfyniad MLA

Kumra, V. K., et al. Geography and Environment. Concept Publishing, 1997.

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