25. Garfield, Eugene. "Citation Indexes for Science: A New Dimension in Documentation Through Association of Ideas". Science, 122 (3159), p. 108-111, 1955 July. Reprinted in Readings in Information Retrieval, p. 261-274, (H.S. Sharp, Editor), The Scarecrow Press, Incorporated, 1964, 1955-1964

25. Garfield, Eugene. "Citation Indexes for Science: A New Dimension in Documentation Through Association of Ideas". Science, 122 (3159), p. 108-111, 1955 July. Reprinted in Readings in Information Retrieval, p. 261-274, (H.S. Sharp, Editor), The Scarecrow Press, Incorporated, 1964, 1955-1964, Box: 89, Folder: 38. Eugene Garfield Papers, 2009-036. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/20800 Accessed November 05, 2024.