Eusebi wa Kaisarea
Fremantle, W.H., G. Lewis and W.G. Martley, trans. Letters. From Nicene and Post-Nicene Fathers, Second Series, Vol. 6. Edited by Philip Schaff and Henry Wace. Buffalo, NY: Christian Literature Publishing Co., 1893. Revised and edited for New Advent by Kevin Knight. Online at New Advent and CCEL. Accessed 19 October 2009.