<ref name="torralba">{{Ref-llibre|cognom=Torralba|nom=Francesc|títol=Paraules per ser feliç|url=http://www.francesctorralba.com/catala/detall_llibre.php?recordID=81|editorial=Ara Llibres|lloc=Badalona|data=2009|isbn=9788492552702|consulta=1339089607|arxiuurl=https://web.archive.org/web/20120713143509/http://www.francesctorralba.com/catala/detall_llibre.php?recordID=81|arxiudata=1342190109}}</ref>