A standards citation should contain publisher, name of the standard, number, and year of publication. Edition is given only when 2^nd or later edition is used.

Reference list

Publisher (Year). Standard title. Place of publication: Publisher.

Finnish Standards Association SFS (2015). Quality management systems: requirements SFS-EN ISO 9001. Helsinki: Finnish Standards Association.

British Standards Institution (2008). BS EN ISO 9001: 2008 Quality management systems. Requirements. Milton Keynes: BSI.

In-text citation

Quality according to SFS-EN ISO 9001 is… (Finnish Standards Association SFS 2015).

According to the British standard BS 5555 on quality … (British Standards 2008).