Ruggiero, V. R. (2011). Thinking critically about ethical issues (8th ed.). Dubuque: McGraw-Hill.
Παραπομπή Chicago StyleRuggiero, Vincent Ryan. Thinking Critically About Ethical Issues. 8th ed. Dubuque: McGraw-Hill, 2011.
Παραπομπή MLARuggiero, Vincent Ryan. Thinking Critically About Ethical Issues. 8th ed. Dubuque: McGraw-Hill, 2011.
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