ASSOCIATION, N. E. Educational leadership: Progress and possibilities, eleventh yearbook. The National Education Association.
Chicago-Zitierstil (17. Ausg.)ASSOCIATION, NATIONAL EDUCATION. Educational Leadership: Progress and Possibilities, Eleventh Yearbook. The National Education Association.
MLA-Zitierstil (8. Ausg.)ASSOCIATION, NATIONAL EDUCATION. Educational Leadership: Progress and Possibilities, Eleventh Yearbook. The National Education Association.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.