De Feo, J. A. (2004). Juran Institutes six sigma breakthrough and beyond. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)De Feo, Joseph A. Juran Institutes Six Sigma Breakthrough and Beyond. McGraw-Hill, 2004.
Lua MLA (8ú heag.)De Feo, Joseph A. Juran Institutes Six Sigma Breakthrough and Beyond. McGraw-Hill, 2004.
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