APA aipamena

Rana, S. V. S. (2015). Essentials of ecology and environmental science (5.). PHI Learning Private Limited.

Chicago Style aipamena

Rana, S V S. Essentials of Ecology and Environmental Science. 5. New Delhi: PHI Learning Private Limited, 2015.

MLA aipamena

Rana, S V S. Essentials of Ecology and Environmental Science. 5. PHI Learning Private Limited, 2015.