Boehm, A. E., & Weinberg, R. A. (1997). The classroom observer: Developing observation skills in early childhood settings (3rd ed.). Teachers College Press, Columbia University.
Цитирование в стиле Чикаго (17-е изд.)Boehm, Ann E., и Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. New York: Teachers College Press, Columbia University, 1997.
Цитирование MLA (9-е изд.)Boehm, Ann E., и Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. Teachers College Press, Columbia University, 1997.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.