Indrawati, Fitri Maya Puspita, Resmadona, Evi Yuliza, Oki Dwipurwani, and Sisca Octarina. “Analysis of Information Service Pricing Scheme Model Based on Customer Self-Selection”. Science and Technology Indonesia 6, no. 4 (October 18, 2021): 337–343. Accessed July 22, 2024. https://sciencetechindonesia.com/index.php/jsti/article/view/399.