ALLEN, W. S. (1974). Living english structure: Key to the exercises. Longman.
Chicago-čujuhus (17. p.)ALLEN, W. Stannard. Living English Structure: Key to the Exercises. London: Longman, 1974.
MLA-čujuhus (9. p.)ALLEN, W. Stannard. Living English Structure: Key to the Exercises. Longman, 1974.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.