Sondrol, Paul (2005). „The Presidentialist Tradition in Latin America”. International Journal of Public Administration. 28 (5): 517—530. S2CID153822718. doi:10.1081/PAD-200055210.
Sondrol, Paul (2005). „The Presidentialist Tradition in Latin America”. International Journal of Public Administration. 28 (5): 517—530. S2CID153822718. doi:10.1081/PAD-200055210.