Shoener. The Price of Safety. Vanderbilt University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShoener. The Price of Safety. Vanderbilt University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रShoener. The Price of Safety. Vanderbilt University Press.
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