United States department of agriculture, Economic research service, Caswell, M., Fuglie, K., & Ingram, C. (2001). Adoption of agricultural production practices: Lessons learned from the U. S. department of agriculture area studies project.
Chicago-referens (17:e uppl.)United States department of agriculture, Economic research service, Margriet Caswell, Keith Fuglie, och Cassandra Ingram. Adoption of Agricultural Production Practices: Lessons Learned from the U. S. Department of Agriculture Area Studies Project. 2001.
MLA-referens (9:e uppl.)United States department of agriculture, et al. Adoption of Agricultural Production Practices: Lessons Learned from the U. S. Department of Agriculture Area Studies Project. 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.