Zimmerman, C.C. 1966. Herbert R. Barringer, George I. Blanksten, Raymond W. Mack. Social Change in Developing Areas, A Reinterpretation of Evolutionary Theory. Revista Mexicana de Sociologí­a. 28, 3 (jul. 1966), 743–745. DOI:https://doi.org/10.22201/iis.01882503p.1966.3.58649.