^Meulenbeld, G. J. A History of Indian Medical Literature (Groningen, 1999-2002), vol. IA, pp. 7-180. OCLC165833440.
^Valiathan, M. S. (2003) The Legacy of Caraka Orient Longman ISBN81-250-2505-7 reviewed in Current Science, Vol.85 No.7 Oct 2003, Indian Academy of Sciences seen at  June 1, 2006
^E. Schultheisz (1981), History of Physiology, Pergamon Press, ISBN978-0080273426, page 60-61, Quote: "(...) the Charaka Samhita and the Susruta Samhita, both being recensions of two ancient traditions of the Hindu medicine".
^Wendy Doniger (2014), On Hinduism, Oxford University Press, ISBN978-0199360079, page 79, Quote: A basic assumption of Hindu medical texts like the Charaka Samhita (composed sometime between 100 BCE and 100 CE) is the doctrine of the three (...); Sarah Boslaugh (2007), Encyclopedia of Epidemiology, Volume 1, SAGE Publications, ISBN978-1412928168, page 547, Quote: "The Hindu text known as Sushruta Samhita (600 AD) is possibly the earliest effort to classify diseases and injuries"
^Thomas Banchoff (2009), Religious pluralism, globalization, and world politics, Oxford University Press, ISBN978-0195323412, page 284, Quote: An early Hindu text, the Caraka Samhita, vividly describes the beginning of life (...)