Baltussen, Han. "Galen." In The Oxford Encyclopedia of Ancient Greece and Rome. : Oxford University Press, 2010. https://www-oxfordreference-com.ezproxy.ups.edu:2443/view/10.1093/acref/9780195170726.001.0001/acref-9780195170726-e-515.
Galen. On Temperaments. On Non-Uniform Distemperment. The Soul’s Traits Depend on Bodily Temperament. Edited and translated by Ian Johnston. Loeb Classical Library 546. Cambridge, MA: Harvard University Press, 2020.
Galen. On the Natural Faculties. Translated by A. J. Brock. Loeb Classical Library 71. Cambridge, MA: Harvard University Press, 1916.
Gill, Christopher, Whitmarsh, Tim, and Wilkins, John. Galen and the World of Knowledge. Greek Culture in the Roman World. Cambridge, UK ; New York: Cambridge University Press, 2009.
Katz, A. M. (1957). Knowledge of the circulation Before William Harvey. Circulation, 15(5), 726-734. doi:10.1161/01.cir.15.5.726
Mattern, S. P. (2013). The Prince of Medicine: Galen in the Roman Empire. New York, NY: Oxford University Press.
Nutton, Vivian. "Galen (129—c. 216 CE)." Encyclopedia of Philosophy, edited by Donald M. Borchert, 2nd ed., vol. 4, Macmillan Reference USA, 2006, pp. 4-7. Gale In Context: Opposing Viewpoints, link.gale.com/apps/doc/CX3446800709/OVIC?u=taco25438&sid=OVIC&xid=087961cf. Accessed 2 Mar. 2021.
Nutton, Vivian. "Galenism." In The Oxford Companion to the History of Modern Science. : Oxford University Press, 2003.
Singer, C. (1952). Vesalius on the Human Brain. London: Oxford Univ. Press.
Touwaide A. (2018) "Galen and Galenism". In: Sgarbi M. (eds) Encyclopedia of Renaissance Philosophy. Springer, Cham. https://doi.org/10.1007/978-3-319-02848-4_396-1.
Bockler, Donald. "Let's Play Doctor: Medical Rounds in Ancient Greece." The American Biology Teacher 60, no. 2 (1998): 106-11. Accessed April 14, 2021. doi:10.2307/4450428.
Brockmann, Christian. "A God and Two Humans on Matters of Medicine: Asclepius, Galen and Aelius Aristides." In In Praise of Asclepius: Aelius Aristides, Selected Prose Hymns, edited by Nesselrath Heinz-Günther, Russell Donald A., and Trapp Michael, by Melfi Milena, Parker Robert, and Steger Florian, 115-28. Tübingen, Germany: Mohr Siebeck GmbH and KG, 2016. Accessed March 23, 2021. http://www.jstor.org/stable/j.ctv9b2wcx.10.
Catani, Marco. Brain Renaissance : From Vesalius to Contemporary Neuroscience /. New York, New York :: Oxford University Press, 2015.