APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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