Cetrangolo, M. A. (1970). Winter beef production under uncertainty. Department of Agricultural Economics and Business Management, University of New England.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cetrangolo, Miguel A. Winter Beef Production Under Uncertainty. Armidale, NSW: Department of Agricultural Economics and Business Management, University of New England, 1970.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Cetrangolo, Miguel A. Winter Beef Production Under Uncertainty. Department of Agricultural Economics and Business Management, University of New England, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.