Athanasius of Brest (English Wikipedia)

Bulgakov, S. V. (1900). Handbook for Church Servers (PDF). Translated by Eugene D. Tarris (2nd ed.). Kharkov. pp. 314–316. Archived from the original (PDF) on 2006-07-13. Retrieved 2010-02-14.{{cite book}}: CS1 maint: location missing publisher (link)

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Brady, John. "God is Wonderful in His Saints. Orthodox Saints commemorated in September". Archived from the original on 28 March 2010. Retrieved 2010-02-14.
Bulgakov, S. V. (1900). Handbook for Church Servers (PDF). Translated by Eugene D. Tarris (2nd ed.). Kharkov. pp. 314–316. Archived from the original (PDF) on 2006-07-13. Retrieved 2010-02-14.{{cite book}}: CS1 maint: location missing publisher (link)