Berrill, N. J. (1966). Biology in Action: A Beginning College Textbook. New York: Dodd, Mead.
शिकागो स्टाइल उद्धरणBerrill, N. J. Biology in Action: A Beginning College Textbook. New York: Dodd, Mead, 1966.
एमएलए उद्धरणBerrill, N. J. Biology in Action: A Beginning College Textbook. New York: Dodd, Mead, 1966.
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