*[http://www.esoteric.msu.edu/VolumeII/CelestialHierarchy.html ''The Celestial Hierarchy'' by St. Dionysius the Areopagite]

*[http://www.zeitun-eg.net/members_contrib/PopeShenoudaIII_TheANGELS.pdf ''The Angels'' by H.H. Pope Shenouda III (Format: PDF)]

[[en:Angels]]