Azzahra, Sitti, Setiawan Hadi, and Juli Rejito. 2022. “Application of Design Thinking on UI/UX Web Spectrum Fitness Purwakarta”. JITSI : Jurnal Ilmiah Teknologi Sistem Informasi 3 (3), 67 - 74. https://jurnal-itsi.org/index.php/jitsi/article/view/66.