Porter, C. O., & Alexander, R. J. (1961). The strunggler for democracy in Latin America (1a. ed.). The Macmillan Company.

Porter, Charles O., and Robert J. Alexander. The Strunggler for Democracy in Latin America. 1a. ed. Nueva York: The Macmillan Company, 1961.

Porter, Charles O., and Robert J. Alexander. The Strunggler for Democracy in Latin America. 1a. ed. The Macmillan Company, 1961.