Griffin, S., Treffeisen, P. A., & Heady, E. O. (1978). Iowa's commercial farms: An analysis of the USDA cost of production survey. Center for Agricultural and Rural Development, Iowa State University.
Chicago Style (17th ed.) CitationGriffin, Steven, P. Alan Treffeisen, and Earl O. Heady. Iowa's Commercial Farms: An Analysis of the USDA Cost of Production Survey. Ames, Iowa: Center for Agricultural and Rural Development, Iowa State University, 1978.
MLA (8th ed.) CitationGriffin, Steven, et al. Iowa's Commercial Farms: An Analysis of the USDA Cost of Production Survey. Center for Agricultural and Rural Development, Iowa State University, 1978.
Warning: These citations may not always be 100% accurate.