Gilbert, J. B. (2005). Clear speech: Pronunciation and Listening Comprehension in North American English (Tercera Edición.). Cambridge University Press.
Chicago-čujuhus (17. p.)Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. Tercera Edición. Cambridge: Cambridge University Press, 2005.
MLA-čujuhus (9. p.)Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. Tercera Edición. Cambridge University Press, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.