(2012). The Official Guide to The TOEFL Test Fourth Edition (Ada CD). Mc GrawHill.
Čikaški stil citiranja (17. izdanje)The Official Guide to The TOEFL Test Fourth Edition (Ada CD). Mc GrawHill, 2012.
MLA način citiranja (8. izdanje)The Official Guide to The TOEFL Test Fourth Edition (Ada CD). Mc GrawHill, 2012.
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