Boehm, A. E., & Weinberg, R. A. (1997). The classroom observer: Developing observation skills in early childhood settings (3rd ed.). Teachers College Press, Columbia University.
Citazione stile Chigago Style (17a edizione)Boehm, Ann E., e Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. New York: Teachers College Press, Columbia University, 1997.
Citatione MLA (9a ed.)Boehm, Ann E., e Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. Teachers College Press, Columbia University, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.