WRR. (2012). Physical Safety: A Matter of Balancing Responsibilities. Amsterdam University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWRR. Physical Safety: A Matter of Balancing Responsibilities. Amsterdam University Press, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWRR. Physical Safety: A Matter of Balancing Responsibilities. Amsterdam University Press, 2012.
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