Mesa-Lago, Carmelo (1972). "Ideological, Political, and Economic Factors in the Cuban Controversy on Material Versus Moral Incentives". Journal of Interamerican Studies and World Affairs. 14 (1): 71. doi:10.2307/174981. JSTOR174981.
Mesa-Lago, Carmelo (1972). "Ideological, Political, and Economic Factors in the Cuban Controversy on Material Versus Moral Incentives". Journal of Interamerican Studies and World Affairs. 14 (1): 71. doi:10.2307/174981. JSTOR174981.
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Pedraza, Silvia (1998). "Cuba's Revolution and Exodus". The Journal of the International Institute. 5 (2). Retrieved August 19, 2020.