“PERBEDAAN HASIL BELAJAR SISWA MENGGUNAKAN MEDIA PEMBELAJARAN DIGITAL BERBASIS GAMIFIKASI ZEP-QUIZ  PADA MATERI KETENAGAKERJAAN DI KELAS XI DI SMAN 1 PERCUT SEI TUAN”. JOURNAL OF SCIENCE AND SOCIAL RESEARCH 9, no. 2 (April 30, 2026): 1884–1890. Accessed May 15, 2026. https://jurnal.goretanpena.com/index.php/JSSR/article/view/6038.