Ruggiero, V. R. (1992). Thinking critically about ethical issues (3rd ed.). Mayfield.
芝加哥风格引文Ruggiero, Vincent Ryan. Thinking Critically About Ethical Issues. 3rd ed. Mountain View, Calif.: Mayfield, 1992.
MLA引文Ruggiero, Vincent Ryan. Thinking Critically About Ethical Issues. 3rd ed. Mayfield, 1992.
警告：这些引文格式不一定是100％准确.