@book{243245,
	author = {Cockburn, Anne. and ProQuest (Firm)},
	title = {Mathematical understanding 5-11},
	publisher = {Paul Chapman ;},
	year = {2007.},
	address = {London :},
	url = {https://ebookcentral.proquest.com/lib/kuct-ebooks/detail.action?docID=354939}
}