Purba, Marta Sari, Veronika E.T. Salem, and Nismawati Nismawati. “Keterampilan Guru Dalam Mengadakan Variasi Belajar Pada Pembelajaran Sosiologi Kelas XI SMA Negeri 2 Tondano”. ETIC (EDUCATION AND SOCIAL SCIENCE JOURNAL) 2, no. 6 (October 13, 2025): 606–614. Accessed January 28, 2026. https://naluriedukasi.com/index.php/eticjournal/article/view/440.