APA-referens (7:e uppl.)

Welch, K. (2005). TS 16949: Insights from a third party auditor with a process approach audit checklist. ASQ Quality Press.

Chicago-referens (17:e uppl.)

Welch, Karen. TS 16949: Insights from a Third Party Auditor with a Process Approach Audit Checklist. Milwaukee, Wisconsin: ASQ Quality Press, 2005.

MLA-referens (9:e uppl.)

Welch, Karen. TS 16949: Insights from a Third Party Auditor with a Process Approach Audit Checklist. ASQ Quality Press, 2005.