Boehm, A. E., & Weinberg, R. A. (1997). The classroom observer: Developing observation skills in early childhood settings (3rd ed.). Teachers College Press, Columbia University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBoehm, Ann E., और Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. New York: Teachers College Press, Columbia University, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBoehm, Ann E., और Richard A. Weinberg. The Classroom Observer: Developing Observation Skills in Early Childhood Settings. 3rd ed. Teachers College Press, Columbia University, 1997.
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