Levin, L. (1996). An investigative approach to industrial hygiene: Sleuth at work. Van Nostrand Reinhold.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLevin, Lester. An Investigative Approach to Industrial Hygiene: Sleuth at Work. New York: Van Nostrand Reinhold, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLevin, Lester. An Investigative Approach to Industrial Hygiene: Sleuth at Work. Van Nostrand Reinhold, 1996.
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