Não informado. (1962). Theory into practice. Ohio State University, Bureau of Educational Research and Service.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Theory into Practice. Columbus, Ohio: Ohio State University, Bureau of Educational Research and Service, 1962.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Theory into Practice. Ohio State University, Bureau of Educational Research and Service, 1962.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.