(1960). Farm costs and returns: Commercial farms by type, size and location. Department of Agriculture.
Chicago-Zitierstil (17. Ausg.)Farm Costs and Returns: Commercial Farms by Type, Size and Location. Washington: Department of Agriculture, 1960.
MLA-Zitierstil (9. Ausg.)Farm Costs and Returns: Commercial Farms by Type, Size and Location. Department of Agriculture, 1960.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.