Gregersen, H. M., & Contreras, A. H. (1979). Forestry for local community development. Food and Agriculture Organization of the United Nations.
Citazione stile Chigago Style (17a edizione)Gregersen, H. M., e Arnoldo H. Contreras. Forestry for Local Community Development. Rome: Food and Agriculture Organization of the United Nations, 1979.
Citatione MLA (9a ed.)Gregersen, H. M., e Arnoldo H. Contreras. Forestry for Local Community Development. Food and Agriculture Organization of the United Nations, 1979.
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