| Source | Availability | Format | | :--- | :--- | :--- | | (webstore.iec.ch) | Withdrawn – purchase as historical | Secured PDF | | BSI Group (UK) | Superseded – available for reference | PDF/Digital | | DKE (Germany) | Historical archive | PDF | | ANSI Webstore (USA) | Historical adoption | PDF | | SAI Global | Historical archive | PDF |
A very specific request!