E. Obuobie, Keraita, B., Danso, G., Amoah, P., Cofie, O., Raschid-Sally, L., y Drechsel, P.,
«Irrigated urban vegetable production in Ghana : characteristics, benefits and risks». City Farmer, Canada's Office of Urban Agriculture, Vancouver, BC, Canada, p. 150 p. (16 seperate PDF-files).