APA-čujuhus (7. p.)
Siebels, D. (2004). The quality improvement glossary. ASQ Quality Press.
Chicago-čujuhus (17. p.)
Siebels, Don. The Quality Improvement Glossary. Milwaukee, Wisconsin: ASQ Quality Press, 2004.
MLA-čujuhus (9. p.)
Siebels, Don. The Quality Improvement Glossary. ASQ Quality Press, 2004.
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