TAGNE NANCY R. (1995). QUALITY TOOL BOX. ASQ QUALITY PRESS.
Lua i Stíl Chicago (17ú heag.)TAGNE NANCY R. QUALITY TOOL BOX. WISCONSIN: ASQ QUALITY PRESS, 1995.
Lua MLA (9ú heag.)TAGNE NANCY R. QUALITY TOOL BOX. ASQ QUALITY PRESS, 1995.
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