Não informado. (1918). Tappi Journal. Technical Association of the Pulp and Paper Industry.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Tappi Journal. Atlanta, Ga: Technical Association of the Pulp and Paper Industry, 1918.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Tappi Journal. Technical Association of the Pulp and Paper Industry, 1918.
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