APA (7 वां संस्करण) प्रशस्ति पत्र
Holmes, J. (2009). Darwin's bards: British and American poetry in the age of evolution. Edinburgh University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Holmes, John. Darwin's Bards: British and American Poetry in the Age of Evolution. Edinburgh: Edinburgh University Press, 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Holmes, John. Darwin's Bards: British and American Poetry in the Age of Evolution. Edinburgh University Press, 2009.
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