18. Garfield, Eugene. "The Preparation of Subject Heading Lists by Automatic Punched-Card Techniques", The Journal of Documentation, 10 (1), 1954 March. Reprinted in Essays of An Information Scientist, Vol. 6, p. 444, 1983, 1953-1960

18. Garfield, Eugene. "The Preparation of Subject Heading Lists by Automatic Punched-Card Techniques", The Journal of Documentation, 10 (1), 1954 March. Reprinted in Essays of An Information Scientist, Vol. 6, p. 444, 1983, 1953-1960, Box: 89, Folder: 31. Eugene Garfield Papers, 2009-036. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/20793 Accessed November 24, 2024.