Graham, W. (2019). Bella Poldark: A novel of Cornwall, 1818-1820 (First U.S. edition.). St. Martin's Griffin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGraham, Winston. Bella Poldark: A Novel of Cornwall, 1818-1820. First U.S. edition. New York: St. Martin's Griffin, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGraham, Winston. Bella Poldark: A Novel of Cornwall, 1818-1820. First U.S. edition. St. Martin's Griffin, 2019.
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