Thomas, S. N. (1997). Practical reasoning in natural language (4th ed.). Prentice Hall.
芝加哥风格引文Thomas, Stephen N. Practical Reasoning in Natural Language. 4th ed. Upper Saddle River, N. J: Prentice Hall, 1997.
MLA引文Thomas, Stephen N. Practical Reasoning in Natural Language. 4th ed. Prentice Hall, 1997.
警告：这些引文格式不一定是100％准确.