Siringo Ringo, Ermiyanti, Rita Rita, and Rika Kartika. “Pengembangan Bahan Ajar Berbasis Ecoliteracy Lokal Sumatera Utara Pada Materi Puisi Di Kelas X Sekolah Menengah Atas Swasta Pertiwi Medan”. Education & Learning 6, no. 1 (February 9, 2026): 7–13. Accessed March 10, 2026. https://jurnal.medanresourcecenter.org/index.php/EL/article/view/1855.