Sutisna, D., S. Sukmalana, R. O. Satria, and R. Arby. “The Effect of Product Quality and Promotion on Purchasing Decisions: Study at A Company Engaged in The Field of Weapons Systems and Commercial Products”. Jurnal Ekonomi, Bisnis &Amp; Entrepreneurship, vol. 17, no. 2, Nov. 2023, pp. 296-07, doi:10.55208/jebe.v17i2.436.