Ward, B. (1962). The rich nations and the poor nations (1a ed.). W.W. Norton.
Cita Chicago Style (17a ed.)Ward, Barbara. The Rich Nations and the Poor Nations. 1a ed. New York: W.W. Norton, 1962.
Cita MLA (8a ed.)Ward, Barbara. The Rich Nations and the Poor Nations. 1a ed. W.W. Norton, 1962.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.