I have been asked to review the quality manual for accuracy before the owner reprints it. I never noticed this before, but under section 2 normative references, the owner of the laboratory listed reference such as textbooks and guides like: Bam, ISO/IEC guide to general terms in the definitions, and many other ISO guides like 7218, ISO guide 8402:1986. Do all of these references have to be put on a list of controlled external documents? Our lab has a list of internal and external controlled documents. These textbooks and guides listed in Section 2 of the QM are not of the list of external controlled documents. Isn't this a non-conformance?