Roytvarf. (2013). Thinking in Problems (1.). Birkhäuser Boston.
Chicagoスタイル(17版)引用形式Roytvarf. Thinking in Problems. 1. Birkhäuser Boston, 2013.
MLA(8版)引用形式Roytvarf. Thinking in Problems. 1. Birkhäuser Boston, 2013.
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APA(7版)引用形式