Laksana, April, and Rizqi Fitrianti. “STRATEGI NEGOSIASI PENGADAAN BARANG DAN JASA”. Journal of Society and Communico 1, no. 1 (May 30, 2024): 1–13. Accessed May 31, 2026. https://ejournal.lppmbinabangsa.ac.id/index.php/jsco/article/view/22.