Getis, A. (2008). Introduction to Geography. Boston: McGraw-Hill Higher Education.
शिकागो स्टाइल उद्धरणGetis, Arthur. Introduction to Geography. Boston: McGraw-Hill Higher Education, 2008.
एमएलए उद्धरणGetis, Arthur. Introduction to Geography. Boston: McGraw-Hill Higher Education, 2008.
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