[1] Bentley, K. and Phillips, S., (2007), Teaching science in CLIL, Unpublished raw data.
[2] Center on Education Policy (CEP), (2008), Instructional time in elementary schools: A closer look at changes for specific subjects, Retrieved 2/28/2008, from www.cep-dc.org.
[3] Coyle, D., (1999), Theory and planning for effective classrooms: supporting students in content and language integrated learning contexts in Masih, J. (ed.) Learning through a Foreign Language, London: CILT.
[4] Coyle, D., (2006), Content and language integrated learning motivating learners and teachers, Scottish Language Review, 13, p. 1-18.
[5] Coyle, D., Hood, P., & Marsh, D., (2010), CLIL: Content and language integrated learning, NY: Cambridge University Press.
[6] Cummins, J. (1979), Linguistic interdependence and the educational development of bilingual children, Review of Educational Research, 49(2), p. 222-251
[7] Dalton-Puffer, C., (2008), Outcomes and processes in content and language integrated learning (CLIL): Current research from Europe, Future perspectives for English language teaching, p. 139-157.
[8] Hayward, D, (2003), Teaching and Assessing Practical Skills in Science, Cambridge: Cambridge University Press.
[9] Jones, M, Sang, D. and Fellowes Freeman, D. (forthcoming), Cambridge Checkpoint Science Coursebook 7 (p.7), Cambridge: Cambridge University Press.
[10] National Center for Education Statistics (NCES), (2006), The condition of education, Washington, DC: U.S. Department of Education, Office of Educational Research and Improvement.