Kroes. Prison Area, Independence Valley. Dartmouth College Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKroes. Prison Area, Independence Valley. Dartmouth College Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKroes. Prison Area, Independence Valley. Dartmouth College Press.
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