Jelaskan Lihat pula dari Maurikius

Charles, R. H. (1916) The Chronicle of John, Bishop of Nikiu: Translated from Zotenberg's Ethiopic Text, Reprinted 2007. Evolution Publishing, ISBN 978-1-889758-87-9. ; also available free online

Ostrogorski, G; History of the Byzantine State, Rutgers University Press (July 1986)