Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.