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Carr, D. (1988). «The cardinal virtues and Plato's moral psychology». The Philosophical Quarterly. 38 (151): 186–200. JSTOR2219923. doi:10.2307/2219923
Lin Yu-sheng (1974–1975). «The evolution of the pre-Confucian meaning of jen and the Confucian concept of moral autonomy». Monumenta Serica. 31. JSTOR40726170. doi:10.1080/02549948.1974.11731098
Shryack, Jessica; Steger, Michael F.; Krueger, Robert F.; Kallie, Christopher S. (2010). «The structure of virtue: An empirical investigation of the dimensionality of the virtues in action inventory of strengths». Elsevier BV. Personality and Individual Differences. 48 (6): 714–719. ISSN0191-8869. doi:10.1016/j.paid.2010.01.007
jstor.org
Carr, D. (1988). «The cardinal virtues and Plato's moral psychology». The Philosophical Quarterly. 38 (151): 186–200. JSTOR2219923. doi:10.2307/2219923
Vlastos, Gregory (março de 1972). «The Unity of the Virtues in the Protagoras». The Review of Metaphysics. 25 (3): 415–458. JSTOR20126056
Lin Yu-sheng (1974–1975). «The evolution of the pre-Confucian meaning of jen and the Confucian concept of moral autonomy». Monumenta Serica. 31. JSTOR40726170. doi:10.1080/02549948.1974.11731098
Shryack, Jessica; Steger, Michael F.; Krueger, Robert F.; Kallie, Christopher S. (2010). «The structure of virtue: An empirical investigation of the dimensionality of the virtues in action inventory of strengths». Elsevier BV. Personality and Individual Differences. 48 (6): 714–719. ISSN0191-8869. doi:10.1016/j.paid.2010.01.007