The Standards Coordination Office periodically publishes information related to standards and conformity assessment as a service to producers and users of such systems both in the public and private sector. This publication is designed to provide the reader with an introduction to conformity assessment and information on how the various conformity assessment activities are interlinked.
and Phelps, A.
ABC's of Conformity Assessment, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.SP.2000-01
(Accessed April 12, 2021)