Véliz, C. (1965). Obstacles to change in Latin America. London: Oxford University Press.
Dyfyniad Arddull ChicagoVéliz, Claudio. Obstacles to Change in Latin America. London: Oxford University Press, 1965.
Dyfyniad MLAVéliz, Claudio. Obstacles to Change in Latin America. London: Oxford University Press, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.