Sibagariang, Renni Sheena, et al. “Project Based Learning Untuk Meningkatkan Kemampuan Menulis Puisi Siswa SMAN 2 Tarutung”. Socratika: Journal of Progressive Education and Social Inquiry, vol. 3, no. 3, Oct. 2026, pp. 911-22, https://doi.org/10.58230/58vfp489.