Não informado. (2004). Industrial safety equipment and clothing. United Trade Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Industrial Safety Equipment and Clothing. London: United Trade Press, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Industrial Safety Equipment and Clothing. United Trade Press, 2004.
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