RanggaFirdaus, BasukiWibawa, Khaerudin. Conceptual Model Design of Assistances System Development for Informatics Proficiency TestBased on Ubiquitous Learning. TURCOMAT [Internet]. 2021Jun.10 [cited 2024Apr.28];12(6):4891-8. Available from: https://turcomat.org/index.php/turkbilmat/article/view/8668