Sapitri, Bela, Alviona Marsya, and Fitri Handayani Siregar. “Website-Based Business Travel Order Information System Design at BPKH I Medan”. Journal of Computer Science and Informatics Engineering 1, no. 2 (April 29, 2022): 97–107. Accessed August 3, 2025. https://journal.aira.or.id/index.php/cosie/article/view/58.