BARKER ALAN. (2010). SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS (2ND.). KOGAN PAGE.
Chicago-čujuhus (17. p.)BARKER ALAN. SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS. 2ND. LONDON: KOGAN PAGE, 2010.
MLA-čujuhus (9. p.)BARKER ALAN. SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS. 2ND. KOGAN PAGE, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.