[URLs ultima consulta: 26/5/2014]

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[19] ÖIBF (2009b). Peer review in European VET: peer review extended. www.peer-review-education.net/index.php?class=Calimero_Webpage &id=12287

[20] ÖIBF (2009c). Peer review in European VET: peer review extended II. www.peer-review-education.net/index.php?class=Calimero_ Webpage&id=12289

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[22] Zammuner, V. (2003). Il focus group. Bologna: Il Mulino.