Eckes, G. (2001). Making Six Sigma last: Managing the balance between cultural and technical change. Wiley.
Lua i Stíl Chicago (17ú heag.)Eckes, George. Making Six Sigma Last: Managing the Balance Between Cultural and Technical Change. New York: Wiley, 2001.
Lua MLA (9ú heag.)Eckes, George. Making Six Sigma Last: Managing the Balance Between Cultural and Technical Change. Wiley, 2001.
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