Não informado. (1970). Planning & Changing. Illinois State University, Department of Educational Administration.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Planning & Changing. Normal, Ill: Illinois State University, Department of Educational Administration, 1970.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Planning & Changing. Illinois State University, Department of Educational Administration, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.