Duncan, A. (1992). What primary teachers should know about maths. Hodder & Stoughton.
Chicago-viite (17. p.)Duncan, Aileen. What Primary Teachers Should Know About Maths. London: Hodder & Stoughton, 1992.
MLA-viite (9. p.)Duncan, Aileen. What Primary Teachers Should Know About Maths. Hodder & Stoughton, 1992.
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