Press, Irwin. "Problems in the Definition and Classification of Medical Systems." Reprinted from Soc. Sci. Med. 14B, 1980

Press, Irwin. "Problems in the Definition and Classification of Medical Systems." Reprinted from Soc. Sci. Med. 14B, 1980, Box: 192, Folder: 6. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389622 Accessed September 27, 2026.