Tolong jelaskan mengenai Sumber dari Zōē Porphyrogénnētē

Garland, Lynda, "Zoe Porphyrogenita (wife of Romanus III, Constantine IX, and Michael IV)", De Imperatoribus Romanis (2006)

Warren Treadgold, A History of the Byzantine State and Society (Stanford University Press, 1997) ISBN 08047 26302

George Finlay, History of the Byzantine Empire from 716 – 1057, William Blackwood & Sons, 1853