Gilbert, J. B. (2005). Clear speech: Pronunciation and listening comprehension in North American english teacher`s resource book (3rd ed.). Cambridge University.
Čikaški stil citiranja (17. izdanje)Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English Teacher`s Resource Book. 3rd ed. Cambridge: Cambridge University, 2005.
MLA način citiranja (9. izdanje)Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English Teacher`s Resource Book. 3rd ed. Cambridge University, 2005.
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