Ryans, J. K. (1990). Marketing strategies for the new Europe. New York: American marketing Association.
シカゴスタイル引用形Ryans, John K. Marketing Strategies for the New Europe. New York: American marketing Association, 1990.
MLA引用形式Ryans, John K. Marketing Strategies for the New Europe. New York: American marketing Association, 1990.
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