Não informado. (2001). Service and regulatory announcements. U.S. Department of Agriculture, Bureau of Animal Industry.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Service and Regulatory Announcements. Washington: U.S. Department of Agriculture, Bureau of Animal Industry, 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Service and Regulatory Announcements. U.S. Department of Agriculture, Bureau of Animal Industry, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.