*[http://www.sfaturiortodoxe.ro/orthodox/orthodox_advices_angels.htm The Holy Angels]
*[http://www.ccel.org/ccel/schaff/npnf209.iii.iv.ii.iii.html "Concerning angels" (Book 2 Chapter 3) in St John of Damascus' ''An Exact Exposition of the Orthodox Faith'']
{{Angels}}