Cita APA (7th ed.)

Wajnryb, R. (1993). Classroom observation tasks: A resource book for language teachers and trainers. Press Syndicate of the University of Cambridge.

Cita Chicago (17th ed.)

Wajnryb, Ruth. Classroom Observation Tasks: A Resource Book for Language Teachers and Trainers. Cambridge: Press Syndicate of the University of Cambridge, 1993.

Cita MLA (9th ed.)

Wajnryb, Ruth. Classroom Observation Tasks: A Resource Book for Language Teachers and Trainers. Press Syndicate of the University of Cambridge, 1993.