Which standard to use in internal audits

 
Answer:
 
First, let us be practical. If your next certification audit still has ISO 9001:2008 as reference, you must have an internal audit with ISO 9001:2008 as reference. If your next certification audit already has ISO 9001:2015 as reference, you must have an internal audit with ISO 9001:2015 as reference.

The following materials will provide you details with ISO 9001:2015 transition:
- Article - Gap analysis vs. internal audit in ISO 9001
https://advisera.com/9001academy/blog/2015/02/17/gap-analysis-vs-internal-audit-iso-9001//
- Article - How to make the transition from ISO 9001:2008 revision to the 2015 revision
https://advisera.com/9001academy/blog/2015/10/06/how-to-make-the-transition-from-iso-90012008-revision-to-the-2015-revision/
- Article - Should you use a gap analysis in your ISO 9001 implementation?
https://advisera.com/9001academy/17/use-gap-analysis-iso-9001-implementation/
- Tool - ISO 9001:2015 Gap Analysis Tool https://advisera.com/9001academy/iso-9001-gap-analysis-tool/
- White paper - Twelve-step transition process from ISO 9001:2008 to the 2015 revision - https://info.advisera.com/9001academy/free-download/twelve-step-transition-process-from-iso-90012008-to-the-2015-revision
- Free online training ISO 9001:2015 Foundations Course – https://advisera.com/training/iso-9001-foundations-course/

Thank you.

You're welcomed