Betteley, G. (1994). Using statistics in industry: Quality improvement through total process control. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Betteley, Gordon. Using Statistics in Industry: Quality Improvement Through Total Process Control. New York: Prentice Hall, 1994.
Lua MLA (9ú heag.)Betteley, Gordon. Using Statistics in Industry: Quality Improvement Through Total Process Control. Prentice Hall, 1994.
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