Vasile. William Stimpson and the Golden Age of American Natural History. Cornell University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVasile. William Stimpson and the Golden Age of American Natural History. Cornell University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVasile. William Stimpson and the Golden Age of American Natural History. Cornell University Press.
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