Nation, K. (2008). Developmental language disorders.
Chicago-čujuhus (17. p.)Nation, K. Developmental Language Disorders. 2008.
MLA-čujuhus (9. p.)Nation, K. Developmental Language Disorders. 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.