Avram, Henriette, Richard De Gennaro, Josephine S. Pulsifer, John C. Rather, Joseph A. Rosenthal, and Allen B. Veaner. “Levels of Machine Readable Records”. Information Technology and Libraries 3, no. 2 (June 1, 1970): 122–127. Accessed November 25, 2024. https://ital.corejournals.org/index.php/ital/article/view/5248.