Não informado. (1961). The Tool & Manufacturing Engineer. American Society of Tool and Manufacturing Engineers.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. The Tool & Manufacturing Engineer. Dearborn, Mich: American Society of Tool and Manufacturing Engineers, 1961.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. The Tool & Manufacturing Engineer. American Society of Tool and Manufacturing Engineers, 1961.
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