“Implementation of Presidential Regulation Number 12 of 2021 Concerning Government Procurement of Goods and Services in the City of Banjarmasin”. International Journal of Sustainability in Research (IJSR) 1, no. 2 (October 18, 2024): 117–138. Accessed February 11, 2026. https://penerbitjurnalinternasional.com/index.php/ijsr/article/view/727.