Agricultural History Society, United States. Department of Agriculture, Texas A & M University, Agricultural History Symposium, Dethloff, H. C., & May, I. M. (1982). Southwestern agriculture, pre-Columbian to modern. Published for the Agricultural History Society by the Texas A & M University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Agricultural History Society, United States. Department of Agriculture, Texas A & M University, Agricultural History Symposium, Henry C. Dethloff, و Irvin M. May. Southwestern Agriculture, Pre-Columbian to Modern. College Station: Published for the Agricultural History Society by the Texas A & M University Press, 1982.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Agricultural History Society, et al. Southwestern Agriculture, Pre-Columbian to Modern. Published for the Agricultural History Society by the Texas A & M University Press, 1982.