Doolittle, W. E., Neely, J. A., & Adams, K. R. (2004). The Safford Valley grids: Prehistoric cultivation in the southern Arizona desert. University of Arizona Press.
Chicago Style (17th ed.) CitationDoolittle, William Emery, James A. Neely, and Karen R. Adams. The Safford Valley Grids: Prehistoric Cultivation in the Southern Arizona Desert. Tucson: University of Arizona Press, 2004.
MLA (9th ed.) CitationDoolittle, William Emery, et al. The Safford Valley Grids: Prehistoric Cultivation in the Southern Arizona Desert. University of Arizona Press, 2004.
Warning: These citations may not always be 100% accurate.