Não informado. (1980). British Journal of Language Teaching. British Association for Language Teaching.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. British Journal of Language Teaching. Oxford, Inglaterra: British Association for Language Teaching, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. British Journal of Language Teaching. British Association for Language Teaching, 1980.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.