J.Robertson Christopher. (2006). International Business (In lần thứ 1.). An Giang: MC Graw Hill.
शिकागो स्टाइल उद्धरणJ.Robertson Christopher. International Business. In lần thứ 1. An Giang: MC Graw Hill, 2006.
एमएलए उद्धरणJ.Robertson Christopher. International Business. In lần thứ 1. An Giang: MC Graw Hill, 2006.
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