Cita APA (7th ed.)

Rana, S. (2013). Essentials of ecology and environmental Science (5thed.). PHI Learning.

Cita Chicago (17th ed.)

Rana, S.V.S. Essentials of Ecology and Environmental Science. 5thed. Delhi: PHI Learning, 2013.

Cita MLA (9th ed.)

Rana, S.V.S. Essentials of Ecology and Environmental Science. 5thed. PHI Learning, 2013.