ING. (2017). Cambridge Primary Mathematics Second Edition Workbook-4 (Second Edition.). Hodder Education.
Chicago-viite (17. p.)ING. Cambridge Primary Mathematics Second Edition Workbook-4. Second Edition. London: Hodder Education, 2017.
MLA-viite (9. p.)ING. Cambridge Primary Mathematics Second Edition Workbook-4. Second Edition. Hodder Education, 2017.
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