Não informado. (1906). Journal of the American Leather Chemists Association. American Leather Chemists Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the American Leather Chemists Association. Lubbock, Tex: American Leather Chemists Association, 1906.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the American Leather Chemists Association. American Leather Chemists Association, 1906.
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