Keller, A. (1972) «J. Mayone Stycos. Ideology, faith and family planning in Latin America : studies in public and private opinion on fertility control. Nueva York, [N.Y.] : McGraw-Hill Book Company, 1971. 418 p»., Estudios Demográficos y Urbanos, 6(02), pp. 269–271. doi: 10.24201/edu.v6i02.183.