APA-viite (7. p.)

Singh, A. K., & Singh, U. P. (1999). Human ecology and development in India. APH Publishing.

Chicago-viite (17. p.)

Singh, Awadhesh Kumar, ja Udai Pratap Singh. Human Ecology and Development in India. New Delhi: APH Publishing, 1999.

MLA-viite (9. p.)

Singh, Awadhesh Kumar, ja Udai Pratap Singh. Human Ecology and Development in India. APH Publishing, 1999.