Pritchard, S. G., & thor, J. S. (2005). Crops and environmental change: An introduction to effects of global warming, increasing atmospheric CO? and O? concentrations, and soil salinization on crop physiology and yield. Food Products Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pritchard, Seth G., و Jeffrey S. thor. Crops and Environmental Change: An Introduction to Effects of Global Warming, Increasing Atmospheric CO? and O? Concentrations, and Soil Salinization on Crop Physiology and Yield. w York: Food Products Press, 2005.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Pritchard, Seth G., و Jeffrey S. thor. Crops and Environmental Change: An Introduction to Effects of Global Warming, Increasing Atmospheric CO? and O? Concentrations, and Soil Salinization on Crop Physiology and Yield. Food Products Press, 2005.