Cita APA (7a ed.)

Gregersen, H. M., & Contreras, A. H. (1979). Forestry for local community development. Food and Agriculture Organization of the United Nations.

Cita Chicago Style (17a ed.)

Gregersen, H. M., y Arnoldo H. Contreras. Forestry for Local Community Development. Rome: Food and Agriculture Organization of the United Nations, 1979.

Cita MLA (9a ed.)

Gregersen, H. M., y Arnoldo H. Contreras. Forestry for Local Community Development. Food and Agriculture Organization of the United Nations, 1979.