USDA. Cooperative Extension Service.
The USDA Economic Research Service's "farm classification system divides U.S. farms into eight mutually exclusive...groups." "The farm typology focuses on 'family farms,' or farms organized as proprietorships, partnerships, and family corporations that are not operated by a hired manager. To be complete, however, it also includes nonfamily farms." (See also, Farm Topology in "Farm Household and Well-being." USDA. Economic Research Service.)