@book{231482,
	author = {Nybell, Lynn M.},
	title = {Childhood, youth, and social work in transformation},
	publisher = {Columbia University Press},
	year = {c2009.},
	address = {New York},
	note = {Instrucciones de uso:recurso electrónico favor presionar sobre el URL disponible en la parte inferior. En caso de dudas favor consulte al Bibliotecario.},
	url = {http://site.ebrary.com/lib/pucpr/docDetail.action?docID=10538061}
}