Rila Fauziah, Zefriyenni Z. Analysis of Oligopsony Market Structure and Budget Allocation Efficiency for Educational Infrastructure Procurement at the Education Office of Bukittinggi City. JMS [Internet]. 2026 Aug. 19 [cited 2026 Aug. 19];6(03):1150-6. Available from: https://ejournal.seaninstitute.or.id/index.php/JMS/article/view/9009