^Schmidt, James (1998). "'Language, Mythology, and Enlightenment: Historical Notes on Horkheimer and Adorno's Dialectic of Enlightenment.'". Social Research. 65 (4): 807-38 (p.809).
^Van Steenberghen, Fernand (2000). "Maurice De Wulf". In Damico, Helen (ed.). Medieval Scholarship: Philosophy and the Arts. Vol. 3. Garland Publishing. pp. 43–45. ISBN9780815333395. Retrieved 2021-05-26 – via Google Books.
^Dancy, Jonathan. "Harold Arthur Prichard". Stanford Encyclopedia of Philosophy. Retrieved 19 June 2012.