Bergman, E. F., & Renwick, W. H. (1999). Introduction to geography: People, places, and environment. Upper Saddle River, N.J: Prentice Hall.
शिकागो स्टाइल उद्धरणBergman, Edward F., और William H. Renwick. Introduction to Geography: People, Places, and Environment. Upper Saddle River, N.J: Prentice Hall, 1999.
एमएलए उद्धरणBergman, Edward F., और William H. Renwick. Introduction to Geography: People, Places, and Environment. Upper Saddle River, N.J: Prentice Hall, 1999.
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