Whittington & Associates LLC. Glossary , [ISO 9000,2015 e ISO 19011,2018].
Chicago-čujuhus (17. p.)Whittington & Associates LLC. Glossary , [ISO 9000,2015 E ISO 19011,2018].
MLA-čujuhus (9. p.)Whittington & Associates LLC. Glossary , [ISO 9000,2015 E ISO 19011,2018].
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