Muttaqy, Muhammad Zafif, Angelina Prima Kurniati, and Yanuar Firdaus A.W. “Usability Improvement Based on Hierarchical Task Analysis (Case Study on I-Caring)”. International Journal on Information and Communication Technology (IJoICT) 1, no. 1 (March 9, 2016): 12-19. Accessed March 29, 2024. https://socj.telkomuniversity.ac.id/ojs/index.php/ijoict/article/view/5.