Clutterbuck Peter. (2007). Good grammar. Scholastic.
Chicago-čujuhus (17. p.)Clutterbuck Peter. Good Grammar. New York: Scholastic, 2007.
MLA-čujuhus (9. p.)Clutterbuck Peter. Good Grammar. Scholastic, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.