[1] Krashen, S. (1992). The input hypothesis: An update. Linguistics and language pedagogy: The state of the art, 409-431.
[2] McCombs, B. L. (2013). Self-regulated learning and academic achievement: A phenomenological view. In Self-regulated learning and academic achievement (pp. 63-117). Routledge.
[3] Mullis, I. V., Martin, M. O., Foy, P., & Hooper, M. (2017). ePIRLS 2016: International Results in Online Informational Reading. International Association for the Evaluation of Educational Achievement.
[4] Pearson, P. D., & Raphael, T. E. (2003). Toward a more complex view of balance in the literacy curriculum. Best practices in literacy instruction, 2, 23-39.