Betsis, A. (1996). Cambridge First certificate: Rivision practice tests. Cambridge University Press.
Čikaški stil citiranja (17. izdanje)Betsis, Andrew. Cambridge First Certificate: Rivision Practice Tests. Cambridge: Cambridge University Press, 1996.
MLA način citiranja (8. izdanje)Betsis, Andrew. Cambridge First Certificate: Rivision Practice Tests. Cambridge University Press, 1996.
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