Cita APA (7th ed.)

Allwright, D. (1988). Observation in the language classroom. Longman.

Cita Chicago (17th ed.)

Allwright, Dick. Observation in the Language Classroom. Londres: Longman, 1988.

Cita MLA (9th ed.)

Allwright, Dick. Observation in the Language Classroom. Longman, 1988.