“E-Procurement System Technology: An Analysis in Electronic Procurement Service Unit (LPSE) of Kepulauan Riau Province”. The Asian Journal of Technology Management (AJTM) 7, no. 2 (December 18, 2014): 93–107. Accessed September 13, 2026. https://journal.sbm.itb.ac.id/index.php/ajtm/article/view/1198.