Newman, William L., and Edwin J. Buchinski. “Entry/Title/Compression/Code/Access/to/Machine/Readable/Bibliographic/Files”. Information Technology and Libraries 4, no. 2 (June 1, 1971): 72–85. Accessed April 29, 2024. https://ital.corejournals.org/index.php/ital/article/view/5584.