P. P. Saragih and P. D. Purwati, “Penerapan Media Flipbook Berbasis Problem Based Learning (PBL) Upaya Peningkatan Sikap Gotong Royong dan Keterampilan Menulis Teks Eksplanasi Siswa di Sekolah Dasar”, basicedu, vol. 9, no. 1, pp. 81–90, Jan. 2025.