, Luluk Hidayati1 NYS. The Development of Pop-Up Story Book for Improving Language Ability. Int. j. soc. sci. humanit. invent. [Internet]. 2017 Aug. 9 [cited 2024 Nov. 26];4(8):3750-5. Available from: https://valleyinternational.net/index.php/theijsshi/article/view/835