Albertus Djoko Lesmono, Halimatuz Zahrok Supeno. “Students’ Argumentation Skills through PMA Learning in Vocational School”. International Journal of Social Sciences and Humanities Invention 4, no. 7 (July 15, 2017): 3619–3624. Accessed April 28, 2024. https://valleyinternational.net/index.php/theijsshi/article/view/847.