Serang S, Mandung F. Influence of Polite Language and Good Promotion Towards Increasing Sales Volume Goods: A Case Study of Weekly Market Traders at CFD Boulevard, Makassar City, Indonesia. GRSSE [Internet]. 2025 Jun. 29 [cited 2026 Apr. 19];5(2):265-7. Available from: https://goldenratio.id/index.php/grsse/article/view/1027