Emma Danihel; Izabella Hearn. (2015). Oxford English for Cambridge Primary Workbook 4 (CIE IGCSE Complete Series) (Workbook.). Oxford University Press.
Čikaški stil citiranja (17. izdanje)Emma Danihel; Izabella Hearn. Oxford English for Cambridge Primary Workbook 4 (CIE IGCSE Complete Series). Workbook. Oxford University Press, 2015.
MLA način citiranja (9. izdanje)Emma Danihel; Izabella Hearn. Oxford English for Cambridge Primary Workbook 4 (CIE IGCSE Complete Series). Workbook. Oxford University Press, 2015.
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