Gilbert, J. B. (2005). Clear speech: Pronunciation and Listening Comprehension in North American English (Tercera Edición.). Cambridge University Press.
Čikaški stil citiranja (17. izdanje)Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. Tercera Edición. Cambridge: Cambridge University Press, 2005.
MLA način citiranja (9. izdanje)Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. Tercera Edición. Cambridge University Press, 2005.
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