(1966). Decision making and the elementary school principal / Department of Elementary School Principals, National Education Association ; [prepared for the Department by: William L. Pharis, Jack D. Roberts, Richard Wynn].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Decision Making and the Elementary School Principal / Department of Elementary School Principals, National Education Association ; [prepared for the Department by: William L. Pharis, Jack D. Roberts, Richard Wynn]. 1966.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Decision Making and the Elementary School Principal / Department of Elementary School Principals, National Education Association ; [prepared for the Department by: William L. Pharis, Jack D. Roberts, Richard Wynn]. 1966.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.