BESTERFIELD, D. H. (1990). Quality Control Dale H. Besterfield. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)BESTERFIELD, Dale H. Quality Control Dale H. Besterfield. Prentice Hall, 1990.
Lua MLA (8ú heag.)BESTERFIELD, Dale H. Quality Control Dale H. Besterfield. Prentice Hall, 1990.
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