Style de citation APA

Onkar singh et al. (1993). Frontiers in environmental geography. Concept Publishing Company.

Style de citation Chicago

Onkar singh et al. Frontiers in Environmental Geography. New Delhi: Concept Publishing Company, 1993.

Style de citation MLA

Onkar singh et al. Frontiers in Environmental Geography. Concept Publishing Company, 1993.

Attention : ces citations peuvent ne pas être correctes à 100%.