Pittman, M. S. (1921). The value of school supervision: Demonstrated with the zone plan in rural schools. Warwick & York.
Chicago-Zitierstil (17. Ausg.)Pittman, Marvin Summers. The Value of School Supervision: Demonstrated with the Zone Plan in Rural Schools. Baltimore: Warwick & York, 1921.
MLA-Zitierstil (9. Ausg.)Pittman, Marvin Summers. The Value of School Supervision: Demonstrated with the Zone Plan in Rural Schools. Warwick & York, 1921.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.