Não informado. (1932). The Tool Engineer. American Society of Tool and Manufacturing Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. The Tool Engineer. Dearborn, Mich: American Society of Tool and Manufacturing Engineers, 1932.
Lua MLA (8ú heag.)Não informado. The Tool Engineer. American Society of Tool and Manufacturing Engineers, 1932.
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