Krusemeyer, M., Gilbert, G. T., & Larson, L. C. (2012). A mathematical orchard: Problems and solutions. Mathematical Association of America.
Lua i Stíl Chicago (17ú heag.)Krusemeyer, Mark, George T. Gilbert, agus Loren C. Larson. A Mathematical Orchard: Problems and Solutions. Washington, D.C.: Mathematical Association of America, 2012.
Lua MLA (9ú heag.)Krusemeyer, Mark, et al. A Mathematical Orchard: Problems and Solutions. Mathematical Association of America, 2012.
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