SCHMENNER, R. W. (1995). Service Operation Management Roger W. Schmenner. Prentic Hall.
Lua i Stíl Chicago (17ú heag.)SCHMENNER, Roger W. Service Operation Management Roger W. Schmenner. Prentic Hall, 1995.
Lua MLA (8ú heag.)SCHMENNER, Roger W. Service Operation Management Roger W. Schmenner. Prentic Hall, 1995.
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