Gauthier, D. P. (1961). Practical Judgement: A study of judgements about what to do, their bases and their relation to practical problems. University of Oxford.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gauthier, David P. Practical Judgement: A Study of Judgements About What to Do, Their Bases and Their Relation to Practical Problems. England: University of Oxford, 1961.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gauthier, David P. Practical Judgement: A Study of Judgements About What to Do, Their Bases and Their Relation to Practical Problems. University of Oxford, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.