Ardika NP, Margunayasa IG, Yudiana K. QR Code Assisted Pop-Up Book for Grade Two Elementary Schools. j. ilm. sekol. dasar [Internet]. 2022 Dec. 23 [cited 2024 May 9];6(4):719-27. Available from: https://ejournal.undiksha.ac.id/index.php/JISD/article/view/46505