Gerard, Barbara (2015-04-08). "What is ASTM International?". Craftchind: Craftech Industries. Archived from the original on 25 April 2017. Retrieved 1 February 2017.
web.archive.org
Gerard, Barbara (2015-04-08). "What is ASTM International?". Craftchind: Craftech Industries. Archived from the original on 25 April 2017. Retrieved 1 February 2017.