Romanus Turnip, Berlian. “The Jigsaw Method in Didactical Analysis of Indonesian National Songs by W.R. Supratman at Fifth Grade Students PBSI FKIP-USI”. International Journal of English Literature and Social Sciences (IJELS) 5, no. 4 (August 22, 2020). Accessed July 3, 2024. https://journal-repository.com/index.php/ijels/article/view/2385.