Gennard, J. (1976). Economic and technologicl environments 3. Open University Press.
シカゴスタイル引用形Gennard, John. Economic and Technologicl Environments 3. England: Open University Press, 1976.
MLA引用形式Gennard, John. Economic and Technologicl Environments 3. Open University Press, 1976.
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