Citazione APA

Jagadish Singh & Kumar V K. (1997). Geography and environment (v.1: National issues). Concept.

Stile di citazione Chicago

Jagadish Singh e Kumar V K. Geography and Environment (v.1: National Issues). New Delhi: Concept, 1997.

Citazione MLA

Jagadish Singh e Kumar V K. Geography and Environment (v.1: National Issues). Concept, 1997.