ASSOCIATION, N. E. Educational leadership: Progress and possibilities, eleventh yearbook. The National Education Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ASSOCIATION, NATIONAL EDUCATION. Educational Leadership: Progress and Possibilities, Eleventh Yearbook. The National Education Association.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)ASSOCIATION, NATIONAL EDUCATION. Educational Leadership: Progress and Possibilities, Eleventh Yearbook. The National Education Association.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.