Zentner, P. (1967). East-West trade: A practical guide to selling in Eastern Europe. London: Parrish.
शिकागो स्टाइल उद्धरणZentner, Peter. East-West Trade: A Practical Guide to Selling in Eastern Europe. London: Parrish, 1967.
एमएलए उद्धरणZentner, Peter. East-West Trade: A Practical Guide to Selling in Eastern Europe. London: Parrish, 1967.
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