एपीए उद्धरण

Rana, S. V. S. (2007). Essentials of ecology and environmental science (3rd ed.). Prentice Hall of India.

शिकागो स्टाइल उद्धरण

Rana, S. V. S. Essentials of Ecology and Environmental Science. 3rd ed. New Delhi: Prentice Hall of India, 2007.

एमएलए उद्धरण

Rana, S. V. S. Essentials of Ecology and Environmental Science. 3rd ed. Prentice Hall of India, 2007.