Compliance is Key
It is important to keep in mind that the primary purpose of standards is to define compliance clauses in a way that users can claim compliance to differentiate their goods or services from those that are not compliant. In many countries, compliance with an international standard becomes a legal requirement, this is why the reference to the standard must be specific, and the standard names are carefully managed by ISO.
A feature of ISO standards is that self-certification of compliance must always be an option and there is no requirement to use third party certification. Third party certification can, however, provide a very useful additional level of confidence.