Não informado. (1918). Tappi Journal. Technical Association of the Pulp and Paper Industry.
Lua i Stíl Chicago (17ú heag.)Não informado. Tappi Journal. Atlanta, Ga: Technical Association of the Pulp and Paper Industry, 1918.
Lua MLA (8ú heag.)Não informado. Tappi Journal. Technical Association of the Pulp and Paper Industry, 1918.
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