Marhuenda, F., Salvà, F., Navas Saurin, A. A. and Abiétar López, M. (2015) “Twenty Years of Basic Vocational Education Provision in Spain: Changes and Trends”, International Journal for Research in Vocational Education and Training, 2(2), pp. 137–151. doi: 10.13152/IJRVET.2.2.8.