P. . Parlindungan, L. . Sanny, S. A. . Sholihah, N. . Nofrisel, and Z. . Zaroni, “Behaviour and Satisfaction Effects on User Loyalty within e-Procurement of National Oil Firms”, Studi Akuntansi, Keuangan dan Manajemen, vol. 5, no. 2, pp. 189–204, Oct. 2025.