Cita APA

Wajnryb, R., & Wajnryb, R. (1992). Classroom observation tasks: A resource book for language teachers and trainers. Cambridge: Cambridge University Press.

Citación estilo Chicago

Wajnryb, Ruth, y Ruth Wajnryb. Classroom Observation Tasks: A Resource Book for Language Teachers and Trainers. Cambridge: Cambridge University Press, 1992.

Cita MLA

Wajnryb, Ruth, y Ruth Wajnryb. Classroom Observation Tasks: A Resource Book for Language Teachers and Trainers. Cambridge: Cambridge University Press, 1992.