BROWN, G. (1972). Survey Economic Principles Gray Brown. Richard D. Irwin.
Chicagoスタイル(17版)引用形式BROWN, Gray. Survey Economic Principles Gray Brown. Richard D. Irwin, 1972.
MLA(8版)引用形式BROWN, Gray. Survey Economic Principles Gray Brown. Richard D. Irwin, 1972.
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