Karstein, H. (1968). New horizons in marketing. Thacker and Company.
शिकागो स्टाइल उद्धरणKarstein, H. New Horizons in Marketing. Bombay: Thacker and Company, 1968.
एमएलए उद्धरणKarstein, H. New Horizons in Marketing. Thacker and Company, 1968.
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