LOW, O. (1977). First certificate in english practice. Edward Arnold.
Chicago-čujuhus (17. p.)LOW, Ona. First Certificate in English Practice. London: Edward Arnold, 1977.
MLA-čujuhus (9. p.)LOW, Ona. First Certificate in English Practice. Edward Arnold, 1977.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.