APA (7th ed.) Citation

Griffin, S. C., Treffeisen, P. A., & Heady, E. O. (1979). Tractor complements on Iowa commercial farms. Center for Agricultural and Rural Development, Iowa State University.

Chicago Style (17th ed.) Citation

Griffin, Steven C., P. Alan Treffeisen, and Earl O. Heady. Tractor Complements on Iowa Commercial Farms. Ames, Iowa: Center for Agricultural and Rural Development, Iowa State University, 1979.

MLA (9th ed.) Citation

Griffin, Steven C., et al. Tractor Complements on Iowa Commercial Farms. Center for Agricultural and Rural Development, Iowa State University, 1979.