Sugden, D. R. (2009). Gray markets: Prevention, detection, and litigation. Oxford University Press.
Chicago Edition CitationSugden, David R. Gray Markets: Prevention, Detection, and Litigation. Oxford: Oxford University Press, 2009.
MLA引文Sugden, David R. Gray Markets: Prevention, Detection, and Litigation. Oxford University Press, 2009.
警告：這些引文格式不一定是100％准確.