What Does Berkeley's God See in the Quad?McCRACKEN, C. J.Archiv für Geschichte der Philosophie Berlin. 1979, Vol 61, Num 3, pp 280-292Article

Berkeley's Cartesian Concept of Mind : The Return through Malebranche and Locke to Descartes in Descartes and His ContemporariesMcCRACKEN, C. J.The Monist. 1988, Vol 71, Num 4, pp 596-611, issn 0026-9662Article

Berkeley Notion of Spirit in George Berkeley 1685-1985McCRACKEN, C. J.History of European ideas. 1986, Vol 7, Num 6, pp 597-602, issn 0191-6599Article