Wajnryb, R. (1992). Classroom observation tasks: Resource book for language teachers and trainers. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWajnryb, Ruth. Classroom Observation Tasks: Resource Book for Language Teachers and Trainers. New York: Cambridge University Press, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWajnryb, Ruth. Classroom Observation Tasks: Resource Book for Language Teachers and Trainers. Cambridge University Press, 1992.
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