Br Sinuhaji JL, Ngurah Pujawan IG, Parwati NN. Optimalisasi Pemahaman Konsep Geometri Bangun Datar Pada Siswa SMP Melalui Implementasi E-Modul Flipbook Bermuatan Masalah Kontektual: Tinjauan Sistematis: Optimization of Flat Shape Geometry Concept Understanding in Junior High School Students through the Implementation of Contextual Problem-Filled Flipbook E-Module: A Systematic Review. CITIZ. J. Ilm. Multidiscip. Ind [Internet]. 2026 May 7 [cited 2026 May 18];6(2):379-8. Available from: https://journal.das-institute.com/index.php/citizen-journal/article/view/1303