Mascull, B., & Bill Mascull; David Heitler. (2006). Market leader: Upper intermediate Business English teacher's book. Harlow: Longman.
शिकागो स्टाइल उद्धरणMascull, Bill, और Bill Mascull; David Heitler. Market Leader: Upper Intermediate Business English Teacher's Book. Harlow: Longman, 2006.
एमएलए उद्धरणMascull, Bill, और Bill Mascull; David Heitler. Market Leader: Upper Intermediate Business English Teacher's Book. Harlow: Longman, 2006.
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