United States. Patent Office, Rosenberg, S., & Butterworth, B. (1979). Rural America, a century ago. American Society of Agricultural Engineers.
Chicago Style (17th ed.) CitationUnited States. Patent Office, Sam Rosenberg, and Benjamin Butterworth. Rural America, a Century Ago. St. Joseph, Mich.: American Society of Agricultural Engineers, 1979.
MLA (9th ed.) CitationUnited States. Patent Office, et al. Rural America, a Century Ago. American Society of Agricultural Engineers, 1979.
Warning: These citations may not always be 100% accurate.