Horowitz, M. M. (1976). Colloquium on the effects of drought on the productive strategies of Sudano-Sahelian herdsmen and farmers: Implications for development : held at Institut de recherches en sciences humaines, Université de Niamey, Niger, June 25-27, 1975. s.n.].
Παραπομπή σε μορφή Chicago (17η εκδ.)Horowitz, Michael M. Colloquium on the Effects of Drought on the Productive Strategies of Sudano-Sahelian Herdsmen and Farmers: Implications for Development : Held at Institut De Recherches En Sciences Humaines, Université De Niamey, Niger, June 25-27, 1975. [s.l.: s.n.], 1976.
Παραπομπή σε μορφή MLA (8th εκδ.)Horowitz, Michael M. Colloquium on the Effects of Drought on the Productive Strategies of Sudano-Sahelian Herdsmen and Farmers: Implications for Development : Held at Institut De Recherches En Sciences Humaines, Université De Niamey, Niger, June 25-27, 1975. s.n.], 1976.