Boehm, A. E., & Weinberg, R. A. (1997). The classroom observer: Developing observation skills in early childhood settings (3rd ed.). Teachers College Press, Columbia University.
Chicago-Zitierstil (17. Ausg.)Boehm, Ann E., und Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. New York: Teachers College Press, Columbia University, 1997.
MLA-Zitierstil (9. Ausg.)Boehm, Ann E., und Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. Teachers College Press, Columbia University, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.