Diocletianus a tetrarchie [online]. antickysvet.cz [cit. 2023-07-14]. Dostupné online.
books.google.com
CARLA-UHINK, Filippo; ROLLINGER, Christian. The Tetrarchy as Ideology: Reconfigurations and Representations of an Imperial Power. [s.l.]: Steiner Franz Verlag 382 s. Dostupné online. ISBN978-3-515-13400-2. (anglicky) Google-Books-ID: eK2NzwEACAAJ.
WIENAND, Johannes. Contested Monarchy: Integrating the Roman Empire in the Fourth Century AD. [s.l.]: Oxford University Press 553 s. Dostupné online. ISBN978-0-19-976899-8. (anglicky) Google-Books-ID: XZarBAAAQBAJ.
italianartsociety.org
On 1 May 305, co-Emperors Diocletian and Maximian retired from office [online]. italianartsociety.org [cit. 2023-07-14]. Dostupné online.