คงสัตย์ ร. (2018) “The Effectiveness of Using Songs in Teaching Grammatical Structure and Vocabulary: The case of Kasetsart University students’ first year English”, Language and Linguistics, 36(2), pp. 1–19. available at: https://so04.tci-thaijo.org/index.php/joling/article/view/173266 (accessed: 3 October 2026).