Saragi, J. E. M. ., H. Hamka, and M. S. . Silitonga. “Strategy for Increasing the Use of Domestic Products in the Procurement of Goods/Services in Government Procurement Agency”. International Journal of Economics Development Research (IJEDR), vol. 4, no. 2, Sept. 2023, pp. 980-96, doi:10.37385/ijedr.v4i3.3340.