Citazione APA

Jagadish Singh; Ed, Kumra, V. K. E., & Prithvish Nag; Ed. (1997). Geography and environment.

Stile di citazione Chicago

Jagadish Singh; Ed, V K; Ed Kumra, e Prithvish Nag; Ed. Geography and Environment. New Delhi, Concept publishing company, 1997.

Citazione MLA

Jagadish Singh; Ed, et al. Geography and Environment. 1997.