Emma Danihel; Izabella Hearn. (2015). Oxford English for Cambridge Primary Workbook 4 (CIE IGCSE Complete Series) (Workbook.). Oxford University Press.
Chicago-čujuhus (17. p.)Emma Danihel; Izabella Hearn. Oxford English for Cambridge Primary Workbook 4 (CIE IGCSE Complete Series). Workbook. Oxford University Press, 2015.
MLA-čujuhus (9. p.)Emma Danihel; Izabella Hearn. Oxford English for Cambridge Primary Workbook 4 (CIE IGCSE Complete Series). Workbook. Oxford University Press, 2015.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.