Não informado. (1940). American Industrial Hygiene Association Quarterly. American Industrial Hygiene Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. American Industrial Hygiene Association Quarterly. Chicago, Ill: American Industrial Hygiene Association, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. American Industrial Hygiene Association Quarterly. American Industrial Hygiene Association, 1940.
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