The typical farm business is different from most nonfarm businesses. In farming, there's a close interdependence between the farm household and the farm business- they can't be separated into two distinct units as in most other industries.
Peterson, G. A.; Back, W. B.; and Heady, Earl O.
"Where Is Your Farm Today?,"
Iowa Farm Science: Vol. 8
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol8/iss2/4