APA-referens (7:e uppl.)

Smith, K. J. (2001). The nature of mathematics (9th ed.). Brooks/Cole.

Chicago-referens (17:e uppl.)

Smith, Karl J. The Nature of Mathematics. 9th ed. Australia, Pacific Grove, CA: Brooks/Cole, 2001.

MLA-referens (9:e uppl.)

Smith, Karl J. The Nature of Mathematics. 9th ed. Brooks/Cole, 2001.