Loretta S. Gray. (1999). Mastering idiomatic english: Prepositional phrases. New York: National Textbook Company.
शिकागो स्टाइल उद्धरणLoretta S. Gray. Mastering Idiomatic English: Prepositional Phrases. New York: National Textbook Company, 1999.
एमएलए उद्धरणLoretta S. Gray. Mastering Idiomatic English: Prepositional Phrases. New York: National Textbook Company, 1999.
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