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Tripathi, Vijaya Narayan (2008), "Astrology in India", in Selin, Helaine (ed.), Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures, Dordrecht: Springer Netherlands, pp. 264–267, doi:10.1007/978-1-4020-4425-0_9749, ISBN978-1-4020-4425-0, archived from the original on 7 March 2023, retrieved 5 November 2020
Tripathi, Vijaya Narayan (2008), "Astrology in India", in Selin, Helaine (ed.), Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures, Dordrecht: Springer Netherlands, pp. 264–267, doi:10.1007/978-1-4020-4425-0_9749, ISBN978-1-4020-4425-0, archived from the original on 7 March 2023, retrieved 5 November 2020