Tillitt, B., & Bruder, M. N. (1985). Speaking naturally: Communication skills in American English. Cambridge University Press.
Čikaški stil citiranja (17. izdanje)Tillitt, Brucc, i Mary Newton Bruder. Speaking Naturally: Communication Skills in American English. Cambridge University Press, 1985.
MLA način citiranja (8. izdanje)Tillitt, Brucc, i Mary Newton Bruder. Speaking Naturally: Communication Skills in American English. Cambridge University Press, 1985.
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