Ruckle, W. H. (1983). Geometric games and their applications. Pitman Advanced Pub..
Chicagoスタイル(17版)引用形式Ruckle, William H. Geometric Games and Their Applications. Boston: Pitman Advanced Pub., 1983.
MLA(8版)引用形式Ruckle, William H. Geometric Games and Their Applications. Pitman Advanced Pub., 1983.
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