Fullformexpand.com, 2026. "USMARC." Accessed February 23, 2026. https://www.fullformexpand.com/usmarc/united-states-machine-readable-cataloging.
"USMARC." (n.d.). Fullformexpand.com. Retrieved February 23, 2026, from https://www.fullformexpand.com/usmarc/united-states-machine-readable-cataloging.
USMARC. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/usmarc/united-states-machine-readable-cataloging (Accessed: 23 February 2026).