Ohio State University. Department of Agricultural Economics and Rural Sociology & Ohio Agricultural Research and Development Center. Economics and sociology occasional paper. Agricultural Economics and Rural Sociology, Ohio State University : Ohio Agricultural Research and Development Center.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ohio State University. Department of Agricultural Economics and Rural Sociology و Ohio Agricultural Research and Development Center. Economics and Sociology Occasional Paper. Columbus, Ohio: Agricultural Economics and Rural Sociology, Ohio State University : Ohio Agricultural Research and Development Center.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ohio State University. Department of Agricultural Economics and Rural Sociology و Ohio Agricultural Research and Development Center. Economics and Sociology Occasional Paper. Agricultural Economics and Rural Sociology, Ohio State University : Ohio Agricultural Research and Development Center.