Ploeg, F. v. d. (1990). Advanced lectures in qualitative economics. Academic Press.
Chicagoスタイル(17版)引用形式Ploeg, Frederick van der. Advanced Lectures in Qualitative Economics. London: Academic Press, 1990.
MLA(9版)引用形式Ploeg, Frederick van der. Advanced Lectures in Qualitative Economics. Academic Press, 1990.
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