Smith, K. J. (2001). The nature of mathematics (9th ed.). Brooks/Cole.
芝加哥风格引文Smith, Karl J. The Nature of Mathematics. 9th ed. Australia, Pacific Grove, CA: Brooks/Cole, 2001.
MLA引文Smith, Karl J. The Nature of Mathematics. 9th ed. Brooks/Cole, 2001.
警告：这些引文格式不一定是100％准确.