USABILITY AND USEFULNESS FOR ONLINE SINGLE SUBMISSION SYSTEM IN INVESTMENT AND ONE-STOP INTEGRATED SERVICE OFFICE, SAMARINDA CITY. JITU [Internet]. 2021 Jun. 30 [cited 2025 Apr. 19];4(1):14-21. Available from: //jkd.komdigi.go.id/index.php/jitu/article/view/3892