Gilbert, G. T., Krusemeyer, M. I., & Larson, L. C. (1993). The Wohascum county problem book. The Mathematical Association of America.
Chicago Style (17. basım) AtıfGilbert, George Thomas, Mark I. Krusemeyer, ve Loren C. Larson. The Wohascum County Problem Book. Washington, D.C: The Mathematical Association of America, 1993.
MLA (9th ed.) AtıfGilbert, George Thomas, et al. The Wohascum County Problem Book. The Mathematical Association of America, 1993.
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