Kaushik, A., & Kaushik, C. P. (2010). Basics of environment and ecology. New Age International (P) Ltd..
Chicago-čujuhus (17. p.)Kaushik, Anubha, juo C. P. Kaushik. Basics of Environment and Ecology. Daryaganj, New Delhi: New Age International (P) Ltd., 2010.
MLA-čujuhus (9. p.)Kaushik, Anubha, juo C. P. Kaushik. Basics of Environment and Ecology. New Age International (P) Ltd., 2010.
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