Hasnas, John (1998). "The Normative Theories of Business Ethics: A Guide for the Perplexed". Business Ethics Quarterly. 8 (1): 19–42. doi:10.2307/3857520. JSTOR3857520. S2CID44030310.
Hasnas, John (1998). "The Normative Theories of Business Ethics: A Guide for the Perplexed". Business Ethics Quarterly. 8 (1): 19–42. doi:10.2307/3857520. JSTOR3857520. S2CID44030310.
Simpson, Brian P. (August 2010). "Two Theories of Monopoly and Competition: Implications and Applications". The Journal of Applied Business and Economics. 11 (2): 139–151. ProQuest815978228.
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Hasnas, John (1998). "The Normative Theories of Business Ethics: A Guide for the Perplexed". Business Ethics Quarterly. 8 (1): 19–42. doi:10.2307/3857520. JSTOR3857520. S2CID44030310.