1. Aquinas, Thomas,Summa Theologiae, (Trans.) and (Ed.) by Fathers of the English Dominican Province, Second and Revised Edition, 1920. Online Edition, copyright © 2008 by Kevin Knight.
2. Aquinas, Thomas,Super Epist. B. Pauli ad Hebraeos lectura, (Trans.) Fabian Larcher, O.P.On the Epistle to the Hebrews, http://dhspriory.org/thomas/SSHebrews.htm.