Gopi, K. C., and C. Radhakrishnan. “Charles Darwin : A Biogeographer Par Excellence and a Figurehead of Rational Science”. Records of the Zoological Survey of India 109, no. 3 (September 1, 2009): 1–4. Accessed September 8, 2024. https://recordsofzsi.com/index.php/zsoi/article/view/158986.