Nakao, K., Q. W. L. Oga-Baldwin, and L. K. Fryer. “Developing Phoneme-Grapheme Recognition for English As a Foreign Language: A Longitudinal Study at Japanese Primary School”. International Electronic Journal of Elementary Education, vol. 16, no. 3, Apr. 2024, pp. 337-4, https://iejee.com/index.php/IEJEE/article/view/2143.