Wajnryb, R. (1992). Classroom observation tasks: A resource book for language teachers and trainers. Cambridge University Press.
Chicago-čujuhus (17. p.)Wajnryb, Ruth. Classroom Observation Tasks: A Resource Book for Language Teachers and Trainers. Cambridge: Cambridge University Press, 1992.
MLA-čujuhus (9. p.)Wajnryb, Ruth. Classroom Observation Tasks: A Resource Book for Language Teachers and Trainers. Cambridge University Press, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.