Calyton, E. (1983). Agriculture, poverty, and freedom in developing countries. Macmillan.
Citação do estilo Chicago (17ª ed.)Calyton, Eric. Agriculture, Poverty, and Freedom in Developing Countries. London: Macmillan, 1983.
Citação MLA (9ª ed.)Calyton, Eric. Agriculture, Poverty, and Freedom in Developing Countries. Macmillan, 1983.