Boehm, A. E., & Weinberg, R. A. (1997). The classroom observer: Developing observation skills in early childhood settings (3rd ed.). Teachers College Press, Columbia University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Boehm, Ann E., و Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. New York: Teachers College Press, Columbia University, 1997.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Boehm, Ann E., و Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. Teachers College Press, Columbia University, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.