See: Peter Eardley and Carl Still, Aquinas: A Guide for the Perplexed (London: Continuum, 2010), pp. 34–35.
Peter Eardley and Carl Still, Aquinas: A Guide for the Perplexed (London: Continuum, 2010), pp. 34–35 مشارکت‌کنندگان ویکی‌پدیا.