Parker, E.
(2004),
An Overview of the U.S. Approach to Standards, Conformity Assessment, and Metrology, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.6978, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=200100 (Accessed May 31, 2026)