Discourse on the Holy Theophany
Hippolytus of Rome · Ante-Nicene Fathers, vol. 5 · translated by S. D. F. Salmond · edited by Alexander Roberts and James Donaldson; American edition A. Cleveland Coxe · 1886, Christian Literature Company, New York
Public domain (ANF vol. 5, 1886). Electronic text from CCEL. Source