**APA (7th ed.) Citation**

Hale, M. (2003). *Essentials of mathematics: Introduction to theory, proof, and the professional culture*. Mathematical Association of America.

**Chicago Style (17th ed.) Citation**

Hale, Margie. *Essentials of Mathematics: Introduction to Theory, Proof, and the Professional Culture*. [Washington, D.C.]: Mathematical Association of America, 2003.

**MLA (8th ed.) Citation**

Hale, Margie. *Essentials of Mathematics: Introduction to Theory, Proof, and the Professional Culture*. Mathematical Association of America, 2003.

Warning: These citations may not always be 100% accurate.