Mitchell WP.  1994.  Dam the water: the ecology and political economy of irrigation in the Ayacucho Valley, Peru. Irrigation at High Altitudes:the social organization of water control systems in the Andes. :275-302.

Mitchell WP.  1977.  Irrigation Farming in the Andes: Evolutionary Implications. Peasant livelihood: studies in economic anthropology and cultural ecology. :36-59.

Mitchell WP.  1976.  Irrigation and Community in the Central Peruvian Highlands. American Anthropologist. 78:25-44.