Wall, H. S. (2009). Creative mathematics (Rev. ed.). Mathematical Association of America.
Tohutoru Kātū Chicago (17th ed.)Wall, H. S. Creative Mathematics. Rev. ed. Washington, D.C.: Mathematical Association of America, 2009.
Tohutoro MLA (9th ed.)Wall, H. S. Creative Mathematics. Rev. ed. Mathematical Association of America, 2009.
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