1. Andrews, R. 2009. “Review of Research in English as an Additional Language (EAL).” [Online]. http://www.naldic.org.uk/Resources/NALDIC/Research%20and%20Information/Documents/review-of-research-in-eal.pdf
2. Arnot, M., Schneider C., Evans M., Liu Y., Welply O., Davies-Tutt D. 2014. “School Approaches to the Education of EAL Students: Language Development, Social Integration and Achievement.” [Online]. https://www.educ.cam.ac.uk/research/projects/ealead/Fullreport.pdf
3. The Critical Role of Vocabulary Development for English Language Learners
4. Bell Foundation, The. 2020. “EAL And Educational Achievement - The Bell Foundation.” [online]. [Accessed 25 October 2020]. https://www.bell-foundation.org.uk/eal-programme/research/eal-and-educational-achievement/#:~:text=On%20average%2C%20EAL%20pupils%20catch,their%20peers%20by%20age%2016.&text=By%20age%2016%2C%20this%20gap,different%20groups%20of%20EAL%20pupils