SWAN, M. (2005). Practical English usage. Oxford University Press.
Chicago-čujuhus (17. p.)SWAN, Michael. Practical English Usage. Oxford University Press, 2005.
MLA-čujuhus (9. p.)SWAN, Michael. Practical English Usage. Oxford University Press, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.