Wilhelms, C., & Boeck, K. (1971). Market and marketing in the Federal Republic of Germany: A manual for exporters from developing countries. Verlag Weltarchiv GMBH.
Chicagoスタイル(17版)引用形式Wilhelms, Christian, , Klaus Boeck. Market and Marketing in the Federal Republic of Germany: A Manual for Exporters from Developing Countries. Hamburg: Verlag Weltarchiv GMBH, 1971.
MLA(8版)引用形式Wilhelms, Christian, , Klaus Boeck. Market and Marketing in the Federal Republic of Germany: A Manual for Exporters from Developing Countries. Verlag Weltarchiv GMBH, 1971.
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