Reed Kline, Naomi (2003). Maps of Medieval Thought: The Hereford Paradigm. Boydell Press. pp. 149–150. ISBN 978-0-85115-937-9. 978-0-85115-937-9
Guarde, César (2012). "The Roots of the "Astomi" and the "Monocoli" in Ctesias and Megasthenes". Rheinisches Museum für Philologie. 155 (2): 215–218. JSTOR 41697831. /wiki/JSTOR_(identifier)
Reed Kline, Naomi (2003). Maps of Medieval Thought: The Hereford Paradigm. Boydell Press. pp. 149–150. ISBN 978-0-85115-937-9. 978-0-85115-937-9
Guarde, César (2012). "The Roots of the "Astomi" and the "Monocoli" in Ctesias and Megasthenes". Rheinisches Museum für Philologie. 155 (2): 215–218. JSTOR 41697831. /wiki/JSTOR_(identifier)
West, M. L. (December 1964). "Megasthenes on the Astomi". The Classical Review. 14 (3): 242. doi:10.1017/S0009840X00260162. S2CID 161100531. Retrieved 30 July 2018. https://www.cambridge.org/core/journals/classical-review/article/megasthenes-on-the-astomi/F3ECA19042D72F5E74A3C14FF1A20D38