APA-čujuhus (7. p.)
Billstein, R., Libeskind, S., & Lott, J. W. (1993). A problem solving approach to mathematics (5th ed.). Addison- Wesley.
Chicago-čujuhus (17. p.)
Billstein, Rick, Shlomo Libeskind, juo Johnny W. Lott. A Problem Solving Approach to Mathematics. 5th ed. Reading: Addison- Wesley, 1993.
MLA-čujuhus (9. p.)
Billstein, Rick, et al. A Problem Solving Approach to Mathematics. 5th ed. Addison- Wesley, 1993.
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