International Congress of Soil Science. (1982). Desertification soils policy: symposia papers III: Proceedings. Indian Agricultural Research Institute.
Chicago-referens (17:e uppl.)International Congress of Soil Science. Desertification Soils Policy: Symposia Papers III: Proceedings. New Delhi: Indian Agricultural Research Institute, 1982.
MLA-referens (9:e uppl.)International Congress of Soil Science. Desertification Soils Policy: Symposia Papers III: Proceedings. Indian Agricultural Research Institute, 1982.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.