Pakpahan G, Lubis RA, Khaliza N, Lumbangaol TA, Rumahorbo R, Sinaga R. Sumpah Pemuda: Tonggak Persatuan Bangsa Indonesia. Walasuji [Internet]. 2025 Apr. 17 [cited 2026 Apr. 24];15(1). Available from: https://archive.p5i.org/index.php/walasuji/article/view/65