George Gemistos or Plethon
- Biography of the thinker.
- http://www.fhw.gr/chronos/10/en/pl/pn/pnf4.html

Autograph of Georgios Gemistos Plethon
- Original manuscript of the Byzantine scholar.
- http://www.macedonian-heritage.gr/HellenicMacedonia/en/img_B213a.html

Wikipedia: George Gemistos Plethon
- An encyclopedia entry. Incorporates text from the public domain 1911 Encyclopædia Britannica.
- http://en.wikipedia.org/wiki/George_Gemistos_Plethon

Catholic Encyclopedia: Plethon, Georgius Gemistus
- An encyclopedia entry with a short list of secondary literature by William Turner.
- http://www.newadvent.org/cathen/12166a.htm

George Gemistos Plethon on God: Heterodoxy in Defense of Orthodoxy
- An essay by Darien C. DeBolt. From the Paideia Project.
- http://www.bu.edu/wcp/Papers/Medi/MediDebo.htm