Ohio Agricultural Research and Development Center. (1965). Research circular - Ohio Agricultural Research and Development Center. Ohio Agricultural Research and Development Center.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ohio Agricultural Research and Development Center. Research Circular - Ohio Agricultural Research and Development Center. Wooster: Ohio Agricultural Research and Development Center, 1965.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ohio Agricultural Research and Development Center. Research Circular - Ohio Agricultural Research and Development Center. Ohio Agricultural Research and Development Center, 1965.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.