Muttaqy MZ, Kurniati AP, A.W YF. Usability Improvement based on Hierarchical Task Analysis (Case Study on i-Caring). ijoict [Internet]. 2016Mar.9 [cited 2024Apr.18];1(1):12-9. Available from: http://socj.telkomuniversity.ac.id/ojs/index.php/ijoict/article/view/5