Piper, T. J., & Elgart, D. B. (1979). Teacher supervision through behavioral objectives: An operationally described system. Brookes.
Chicago-Zitierstil (17. Ausg.)Piper, Terrence J., und Denise B. Elgart. Teacher Supervision Through Behavioral Objectives: An Operationally Described System. Baltimore, Md: Brookes, 1979.
MLA-Zitierstil (9. Ausg.)Piper, Terrence J., und Denise B. Elgart. Teacher Supervision Through Behavioral Objectives: An Operationally Described System. Brookes, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.