Giannini Foundation of Agricultural Economics, Martin, P. L., Goodhue, R. E., & Wright, B. (2020). California agriculture: Dimensions and issues. University of California, Giannini Foundation of Agricultural Economics, Division of Agriculture and Natural Resources.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Giannini Foundation of Agricultural Economics, Philip L. Martin, Rachael E. Goodhue, و Brian Wright. California Agriculture: Dimensions and Issues. Berkeley, California: University of California, Giannini Foundation of Agricultural Economics, Division of Agriculture and Natural Resources, 2020.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Giannini Foundation of Agricultural Economics, et al. California Agriculture: Dimensions and Issues. University of California, Giannini Foundation of Agricultural Economics, Division of Agriculture and Natural Resources, 2020.