YAKUP, Ilham; HAMDANI, Hafiz; FARIYADIN, Adiman. A Comparative Study Of The Direct Appointment Process For Construction Service Providers Under Presidential Decree No. 16 Of 2018 And Presidential Decree No. 12 Of 2021 (Case Study: Gunung Rajak Village Library Construction Project). International Journal of Science and Environment (IJSE), [S. l.], v. 5, n. 4, p. 233–238, 2025. DOI: 10.51601/ijse.v5i3.175. Disponível em: https://ijsenet.com/index.php/IJSE/article/view/175. Acesso em: 4 may. 2026.