The New Encyclopædia Britannica. Editors of Encyclopædia Britannica. Encyclopædia Britannica. 1998. стр. 731. ISBN978-0-85229-633-2., Quote:"Kapila (fl. 550 BC), Vedic sage and founder of the system of Samkhya, one of the six schools of Vedic philosophy."
Burley, M. (2009). „Kapila: Founder of Samkhya and Avatara of Visnu (with a Translation of Kapilasurisamvada). By Knut A. Jacobsen.”. The Journal of Hindu Studies. Oxford University Press. 2 (2): 244—246. doi:10.1093/jhs/hip013.
Chakravarti, Pulinbihari (1951). Origin and Development of the Sāṃkhya System of Thought(PDF). Oriental Books Reprint Corporation: exclusively distributed by Munshinam Manoharlal Publishers. стр. 6. Архивирано(PDF) из оригинала 22. 8. 2016. г. Приступљено 9. 8. 2016.CS1 одржавање: Формат датума (веза)
Chakravarti, Pulinbihari (1951). Origin and Development of the Sāṃkhya System of Thought(PDF). Oriental Books Reprint Corporation: exclusively distributed by Munshinam Manoharlal Publishers. стр. 7. Архивирано(PDF) из оригинала 22. 8. 2016. г. Приступљено 9. 8. 2016.CS1 одржавање: Формат датума (веза)
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Chakravarti, Pulinbihari (1951). Origin and Development of the Sāṃkhya System of Thought(PDF). Oriental Books Reprint Corporation: exclusively distributed by Munshinam Manoharlal Publishers. стр. 6. Архивирано(PDF) из оригинала 22. 8. 2016. г. Приступљено 9. 8. 2016.CS1 одржавање: Формат датума (веза)
Chakravarti, Pulinbihari (1951). Origin and Development of the Sāṃkhya System of Thought(PDF). Oriental Books Reprint Corporation: exclusively distributed by Munshinam Manoharlal Publishers. стр. 7. Архивирано(PDF) из оригинала 22. 8. 2016. г. Приступљено 9. 8. 2016.CS1 одржавање: Формат датума (веза)