5Anne Krueger, Mauriee Sehiff and Alberto Valdes (eds.). The Political Economy of Agricultural Pricing Policy. 5 vols. Baltimore, Maryland.. The Johns Hopkins University Press, 1991, 1992.
6Michael Lipton, Why Poor People Stay Poor: Urban Bias in Word Development, Cambridge, MA:Harvard University Press, 1977; Robert Bates, Markets and States in Tropical Africa, Berkeley:University of California Press, 1981.
