TY - RPRT TI - Protecting controlled unclassified information in nonfederal systems and organizations AU - Ross, Ron AU - Pillitteri, Victoria AU - Dempsey, Kelley AU - Riddle, Mark AU - Guissanie, Gary PY - 2020 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 800-171r2 DO - 10.6028/NIST.SP.800-171r2 ER -