Lauderdale, W. B. (1981). Progressive education: Lessons from three schools. Phi Delta Kappa Educational Foundation.
Chicago-Zitierstil (17. Ausg.)Lauderdale, William Burt. Progressive Education: Lessons from Three Schools. Bloomington, Ind: Phi Delta Kappa Educational Foundation, 1981.
MLA-Zitierstil (9. Ausg.)Lauderdale, William Burt. Progressive Education: Lessons from Three Schools. Phi Delta Kappa Educational Foundation, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.