Michigan State College. Cooperative Extension Service. (1925). Extension news. Michigan State College, Cooperative Extension Service.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Michigan State College. Cooperative Extension Service. Extension News. East Lansing, MI: Michigan State College, Cooperative Extension Service, 1925.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Michigan State College. Cooperative Extension Service. Extension News. Michigan State College, Cooperative Extension Service, 1925.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.