Ruggiero, V. R. (2008). Thinking critically about ethical issues (7th ed.). McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)Ruggiero, Vincent Ryan. Thinking Critically About Ethical Issues. 7th ed. Boston: McGraw-Hill, 2008.
Tohutoro MLA (9th ed.)Ruggiero, Vincent Ryan. Thinking Critically About Ethical Issues. 7th ed. McGraw-Hill, 2008.
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