Não informado. (1975). Language Teaching and Linguistics Abstracts. Cambridge University Press.
Chicago-referens (17:e uppl.)Não informado. Language Teaching and Linguistics Abstracts. London: Cambridge University Press, 1975.
MLA-referens (8:e uppl.)Não informado. Language Teaching and Linguistics Abstracts. Cambridge University Press, 1975.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.