Setyawan S, Nasehati S S, Prativi A. The Effect of Promo Price and Product Variation on Purchasing Decision at Grabfood, OVO Payment as an Intervening Variables. Nusantara Sci. Tech. Proc. [Internet]. 2021 Jun. 23 [cited 2025 Jun. 27];4(4):212-9. Available from: https://nstproceeding.com/index.php/nuscientech/article/view/417