ALEXANDER, L. (1994). Practice And Progress New Concept English: Suplementary Written & Exercises L.g. Alexander. Kanisius.
Chicago-referens (17:e uppl.)ALEXANDER, L.G. Practice And Progress New Concept English: Suplementary Written & Exercises L.g. Alexander. Kanisius, 1994.
MLA-referens (8:e uppl.)ALEXANDER, L.G. Practice And Progress New Concept English: Suplementary Written & Exercises L.g. Alexander. Kanisius, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.