1. Bamford, J., & Day, R. R. (2004). Extensive reading activities for teaching language. Cambridge University Press.
2. Bieri, T. E. (2018). Learner reflections on extensive reading materials. Proceedings of the Fourth World Congress on Extensive Reading, 4, 285-293. https://jalt-publications.org/content/index.php/jer/article/view/104
3. Cambridge Michigan Language Assessments. (2014). ECCE sample test-form B. https://www.academia.edu/29677953/SAMPLE_TEST_SAMPLE_TEST_Sample_Test_Form_B
4. Chang, A. C-S., & Hu, H. M. (2018). Learning vocabulary through extensive reading: Word frequency levels and L2 learners' vocabulary knowledge level. TESL-EJ, 22(1), 1-20. https://tesl-ej.org/wordpress/issues/volume22/ej85/ej85a1/
5. Chang, A. C-S., & Renandya, W. A. (2017). Current practice of extensive reading in Asia: Teachers' perceptions. The Reading Matrix: An International Online Journal, 17(1), 40-58. http://www.readingmatrix.com/files/16-4vj138u3.pdf