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web.archive.org
Rudd-Clarke, P.; Page, F. (9 December 2015). "A product of our times". Insider Quarterly (Winter 2015). Archived from the original on 25 February 2016. Retrieved 25 February 2016.
Standards Office of the General Cooperation Council for the Arab States of the Gulf (26 November 2008). "Guide for Notified Bodies"(PDF). GCC Standardization Organization - GSO. p. 12. Archived from the original(PDF) on 1 April 2015. Retrieved 25 February 2016.