210. Garfield, Eugene, Granito, C. E., and Petrarca, A. E. "Information Retrieval Services and Methods", Encyclopedia of Chemical Technology, Supplement Volume (2nd edition), John Wiley and Sons, Incorporated, New York, New York, p. 510-535, 1971, 1967, 1971

210. Garfield, Eugene, Granito, C. E., and Petrarca, A. E. "Information Retrieval Services and Methods", Encyclopedia of Chemical Technology, Supplement Volume (2nd edition), John Wiley and Sons, Incorporated, New York, New York, p. 510-535, 1971, 1967, 1971, Box: 92, Folder: 52. Eugene Garfield Papers, 2009-036. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/20980 Accessed November 28, 2024.