Boehm, A. E., & Weinberg, R. A. (1997). The classroom observer: Developing observation skills in early childhood settings (3rd ed.). Teachers College Press, Columbia University.
Dyfyniad Arddull ChicagoBoehm, Ann E., and Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. New York: Teachers College Press, Columbia University, 1997.
Dyfyniad MLABoehm, Ann E., and Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. Teachers College Press, Columbia University, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.