DALE BARRIE G. (1990). MANAGING QUALITY. PRENTICE -HALL INTERNATIONAL, INC.
Lua i Stíl Chicago (17ú heag.)DALE BARRIE G. MANAGING QUALITY. NEW JERSEY,USA: PRENTICE -HALL INTERNATIONAL, INC, 1990.
Lua MLA (9ú heag.)DALE BARRIE G. MANAGING QUALITY. PRENTICE -HALL INTERNATIONAL, INC, 1990.
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