1. Allison, Dale (2006). Studies in Matthew, Baker Academic.
2. Aquinas, Thomas (1888). Summa Theologiae, Textum Leoninum.
3. Aquinas, Thomas (2023, November 04). Super Evangelium S. Iohannis Lectura. Textum Taurini. Available online: https://aquinas.cc/la/en/~Ioan.C11.L5.
4. Aquinas, Thomas (1953). Quaestiones Disputatae de Malo.
5. Hett, Walter Stanley (1957). On the Soul. Parva Naturalia. On Breath, Harvard University Press. LCL 288.