(1990). Linguaphone Intermediate English Course Futher Practice Exercises. Linguaphone Institute Limited.
Čikaški stil citiranja (17. izdanje)Linguaphone Intermediate English Course Futher Practice Exercises. Linguaphone Institute Limited, 1990.
MLA način citiranja (8. izdanje)Linguaphone Intermediate English Course Futher Practice Exercises. Linguaphone Institute Limited, 1990.
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