http://www.iep.utm.edu/galen/#H4

http://www.greekmedicine.net/whos_who/Galen.html

http://exhibits.hsl.virginia.edu/antiqua/galen

http://www.healthguidance.org/entry/6341/1/The-Greek-Physician-Galen.html

https://ryanfb.github.io/loebolus-data/L071.pdf

https://mrhnelson.wordpress.com/2015/02/26/galen-and-the-theory-of-the-opposites/

Bibliography