Herrick, F. H. (1968). Audubon the naturalist: A history of his life and time. New York: Dover.
शिकागो स्टाइल उद्धरणHerrick, Francis Hobart. Audubon the Naturalist: A History of His Life and Time. New York: Dover, 1968.
एमएलए उद्धरणHerrick, Francis Hobart. Audubon the Naturalist: A History of His Life and Time. New York: Dover, 1968.
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