Palmer, G. (2004). Writing extra: A resource book of multi-level skills activities. Cambridge University Press.
Chicago-čujuhus (17. p.)Palmer, Graham. Writing Extra: A Resource Book of Multi-level Skills Activities. New York: Cambridge University Press, 2004.
MLA-čujuhus (9. p.)Palmer, Graham. Writing Extra: A Resource Book of Multi-level Skills Activities. Cambridge University Press, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.