1. Aristotle (1930). Physica. The Works of Aristotle, Clarendon Press. Translated under the editorship of William David Ross.
2. Manheim, Ralph (1984). Id. Scenes from the Drama of European Literature, University of Minnesota Press. First published 1944.
3. Bird, Michael F., and Gupta, Nijay K. (2020). Philippians, Cambridge University Press.
4. Brown, Colin (1975). The New International Dictionary of New Testament Theology, Zondervan.
5. Bultmann, Rudolf (1951). Theology of the New Testament, Charles Scribner’s Sons. [3rd ed.].