Sermon-derived Treatises (Concerning Virgins; Concerning Widows)
Ambrose of Milan · Nicene and Post-Nicene Fathers, Series II, vol. 10 · translated by H. de Romestin, E. de Romestin and H. T. F. Duckworth · edited by Philip Schaff and Henry Wace · 1896, Christian Literature Company, New York
Public domain (NPNF2 vol. 10, 1896). Electronic text from CCEL. Source