Fryman, M. A. (2002). Quality and process improvement. Delmar/Thomson Learning.
Lua i Stíl Chicago (17ú heag.)Fryman, Mark A. Quality and Process Improvement. Albany, NY: Delmar/Thomson Learning, 2002.
Lua MLA (8ú heag.)Fryman, Mark A. Quality and Process Improvement. Delmar/Thomson Learning, 2002.
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