APA-referens (7:e uppl.)

Billstein, R., Libeskind, S., & Lott, J. W. (1993). A problem solving approach to mathematics (5th ed.). Addison-Wesley Pub. Co.

Chicago-referens (17:e uppl.)

Billstein, Rick, Shlomo Libeskind, och Johnny W. Lott. A Problem Solving Approach to Mathematics. 5th ed. Reading, Mass: Addison-Wesley Pub. Co, 1993.

MLA-referens (9:e uppl.)

Billstein, Rick, et al. A Problem Solving Approach to Mathematics. 5th ed. Addison-Wesley Pub. Co, 1993.