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