6Snow, C. E. (2010). Academic Language and the Challenge of Reading. Science, 1182597(450) , 328.
7Schleppegrell, M. J. , & Colombi, M. C. (2002). Developing advanced literacy in first and second langua- ges : Meaning with power ( pp. 1 - 20). Mahwah, N J: Lawrence Erlbanm Associates.
8Snow, C. E., Cancini, H., Gonzalez, P., &Shriberg, E. (1989). Giving formal definitions: An oral lan- guage correlate of school literacy. In D. Bloome ( Ed. ), Classrooms and literacy ( pp. 255 - 249 ). Nor- wood, NJ : Ablex.
9Snow, C. E. , & Uccelli, P. (2009). The challenge of academic language. The Cambridge handbook of literacy, 112 - 133.
10Halliday, M. A. K. (1994a). A language development approach to education. In N. Bird,et al. (Eds.), Language and learning. Papers presented at the Annual International language in Education Conference, Hong Kong, 1993.