Kroll 1997, p. 108. Kroll, Barry M. (Autumn 1997). "Arguing about public issues: what can we learn from practical ethics?". Rhetoric Review. 16 (1): 105–119. doi:10.1080/07350199709389083. JSTOR465966.
Kroll 1997, p. 108. Kroll, Barry M. (Autumn 1997). "Arguing about public issues: what can we learn from practical ethics?". Rhetoric Review. 16 (1): 105–119. doi:10.1080/07350199709389083. JSTOR465966.
Hertzke & McRorie 1998. Hertzke, Allen D.; McRorie, Chris (1998). "The concept of moral ecology". In Lawler, Peter Augustine; McConkey, Dale (eds.). Community and political thought today. Westort, CT: Praeger. pp. 1–26. ISBN9780275960964. OCLC38732164.