PHADUNGKIT, J. Proactive Practice on Job Efficiency of Procurement Officers Mahasarakham University. Interdisciplinary Academic and Research Journal , Maha Sara Kham, TH., v. 3, n. 6, p. 669–684, 2023. DOI: 10.60027/iarj.2023.272032. Disponível em: https://so03.tci-thaijo.org/index.php/IARJ/article/view/272032. Acesso em: 8 dec. 2025.