Não informado. (1972). Philosophy in context: An examination of applied philosophy. Cleveland State University, Department of Philosophy.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Philosophy in Context: An Examination of Applied Philosophy. Cleveland, Ohio: Cleveland State University, Department of Philosophy, 1972.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Philosophy in Context: An Examination of Applied Philosophy. Cleveland State University, Department of Philosophy, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.