Kalthoff, K. (2001). Analysis of biological development. Boston: McGraw-Hill.
शिकागो स्टाइल उद्धरणKalthoff, Klaus. Analysis of Biological Development. Boston: McGraw-Hill, 2001.
एमएलए उद्धरणKalthoff, Klaus. Analysis of Biological Development. Boston: McGraw-Hill, 2001.
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