Peñalosa, Fernando. "Ecological Organization of the Transitional City: Some Mexican Evidence." Reprinted from Social Forces 46, no. 2, 1967 December

Peñalosa, Fernando. "Ecological Organization of the Transitional City: Some Mexican Evidence." Reprinted from Social Forces 46, no. 2, 1967 December, Box: 191, Folder: 4. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389580 Accessed September 27, 2026.