Mu’afah, A. ., Tresnadewi, S. . and Ariani, N. . (2021) “Developing a Smartphone Application Prototype as Digital Supplementary Reading Materials for the Tenth Graders for Vocational High School”, JoLLA: Journal of Language, Literature, and Arts, 1(2), pp. 206–220. doi: 10.17977/um064v1i22021p206-220.