United States. Bureau of Reclamation, Washington State University, Washington Agricultural Experiment Station, United States. Department of Agriculture, & Pacific Northwest Regional Planning Commission. (1945). Types of farming: Columbia Basin joint investigations : problem 2. U.S. Govt. Print. Off..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Bureau of Reclamation, Washington State University, Washington Agricultural Experiment Station, United States. Department of Agriculture, و Pacific Northwest Regional Planning Commission. Types of Farming: Columbia Basin Joint Investigations : Problem 2. Washington, D.C.: U.S. Govt. Print. Off., 1945.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. Bureau of Reclamation, et al. Types of Farming: Columbia Basin Joint Investigations : Problem 2. U.S. Govt. Print. Off., 1945.