1. Araya Muñoz, Isabel (2008), "La Formación Dual y su fundamentación curricular", Revista Educación, 32(1), pp. 45-61.
2. Becker, Gary S. (2009), Human capital: a theoretical and empirical analysis, with special reference to education, Chicago, University of Chicago Press.
3. Economic returns to vocational courses in U.S. High Schools;Bishop;en J Laugslo Vocationalisation of secondary education revisited Springer pp,2005
4. Caroleo, Floro Ernesto y Francesco Pastore (2007), "The youth experience gap: explaining differences across EU countries", Quaderni del Dipartimento di Economia, Finanza e Statistica, 41, [Consulta: mayo de 2017].
5. Checchi, Daniele (2006), The economics of education. Human capital, family backround and inequality, Cambridge, Cambridge University Press.