Author	Title	Edition	Publisher	Year	Series	Number	ISBN	ISSN	URL
Lightfoot, Cynthia and Lalonde, Christopher Edward and Chandler, Michael J. and Jean Piaget Society. Meeting (30th : 2000 : Montréal, Québec)	Changing conceptions of psychological life		Routledge	2012	The Jean Piaget Symposium series		9780415653770		https://ci.nii.ac.jp/ncid/BB25404361