Widarini, N.K.L., Margunayasa, I.G. and Rati, N.W. 2022. Pop-Up Book Media Assisted By QR Code For Second-Grade Elementary School Students. Journal for Lesson and Learning Studies. 5, 3 (Dec. 2022), 439–447. DOI:https://doi.org/10.23887/jlls.v5i3.47223.