APA Edition Citation

OP Singh. (2006). Environment and natural resources: Ecological and economic perspectives. Regency publication.

Chicago Edition Citation

OP Singh. Environment and Natural Resources: Ecological and Economic Perspectives. New Delhi: Regency publication, 2006.

MLA Edition Citation

OP Singh. Environment and Natural Resources: Ecological and Economic Perspectives. Regency publication, 2006.

Warning: These citations may not always be 100% accurate.