Não informado. (1938). Soap and sanitary chemicals. Macnair - Dorland.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Soap and Sanitary Chemicals. New York: Macnair - Dorland, 1938.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Soap and Sanitary Chemicals. Macnair - Dorland, 1938.
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