SIMANIHURUK, S.; HIA, Y. Pengembangan E-Modul Menggunakan Flip PDF Corporate Edition pada Materi Perbandingan Trigonometri pada Segitiga Siku-Siku di SMA N 1 Sumbul. Formosa Journal of Applied Sciences, [S. l.], v. 1, n. 5, p. 775–788, 2022. DOI: 10.55927/fjas.v1i5.1594. Disponível em: https://journal.formosapublisher.org/index.php/fjas/article/view/1594. Acesso em: 28 apr. 2026.