Sugden, D. R. (2009). Gray markets: Prevention, detection, and litigation. Oxford University Press.
シカゴスタイル引用形Sugden, David R. Gray Markets: Prevention, Detection, and Litigation. Oxford: Oxford University Press, 2009.
MLA引用形式Sugden, David R. Gray Markets: Prevention, Detection, and Litigation. Oxford University Press, 2009.
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