Center for Applied Linguistics & Shopen, T. (1987). Languages and their speakers. University of Pennsylvania Press.
Čikaški stil citiranja (17. izdanje)Center for Applied Linguistics i Timothy Shopen. Languages and Their Speakers. Philadelphia: University of Pennsylvania Press, 1987.
MLA način citiranja (9. izdanje)Center for Applied Linguistics i Timothy Shopen. Languages and Their Speakers. University of Pennsylvania Press, 1987.
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