On the mystagogy of the Holy Spirit - Photius I, Saint, Patriarch of Constantinople ([S.l.] Studion Publishers, 1983)
Saint Photios and the filioque / by Michael Azkoul ; edited by James Graves The life of Saint Photios / by Justin Popovich ; translated by Ronald Wertz Mystagogy of the Holy Spirit / translated by Holy Transfiguration Monastery Translator$1 (Bs note. The text. Epitomes s Synodicon on the Holy Spirit The Greek appendices.
Translation of: Mystagogia of the Holy Spirit
Keywords: Photius I, Saint, Patriarch of Constantinople -- ca. 820-ca. 891