MacKendrick. Better Safe Than Sorry. University of California Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMacKendrick. Better Safe Than Sorry. University of California Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMacKendrick. Better Safe Than Sorry. University of California Press.
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