Sellars, E. (2013). Using and applying mathematics at key stage 2: A guide to teaching problem solving and thinking skills. Routledge.
Chicago-Zitierstil (17. Ausg.)Sellars, Elaine. Using and Applying Mathematics at Key Stage 2: A Guide to Teaching Problem Solving and Thinking Skills. London: Routledge, 2013.
MLA-Zitierstil (9. Ausg.)Sellars, Elaine. Using and Applying Mathematics at Key Stage 2: A Guide to Teaching Problem Solving and Thinking Skills. Routledge, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.