British Broadcasting Corporation & Peck, A. (1977). Kontakte. Notes for teachers. Units 1-25 (2nd ed.). British Broadcasting Corporation.
Čikaški stil citiranja (17. izdanje)British Broadcasting Corporation i Antony Peck. Kontakte. Notes for Teachers. Units 1-25. 2nd ed. London: British Broadcasting Corporation, 1977.
MLA način citiranja (8. izdanje)British Broadcasting Corporation i Antony Peck. Kontakte. Notes for Teachers. Units 1-25. 2nd ed. British Broadcasting Corporation, 1977.
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