Sulaeman, Yeni, et al. “Development of Flipbook Electronic Teaching Materials for Implementing the Scientific Approach in Indonesian Language Learning for Vocational High School Students”. AL-ISHLAH: Jurnal Pendidikan, vol. 17, no. 3, Aug. 2025, pp. 4158-70, doi:10.35445/alishlah.v17i3.5560.