@book{206924,
	author = {Derry, Jan.},
	title = {Vygotsky philosophy and education /},
	publisher = {Wiley,},
	year = {2013.},
	series = {The Journal of philosophy of education book series},
	address = {Hoboken :},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781118368732}
}