CAHYADI, LUKIETO. THE EFFECT OF FLASH SALE AND FREE SHIPPING PROMOS ON PURCHASE DECISIONS ON E-COMMERCE SHOPEE (Case Study of STIE Bina Karya Tebing Tinggi Students). International Conference on Health Science, Green Economics, Educational Review and Technology, [S. l.], v. 2, p. 197–210, 2020. DOI: 10.54443/ihert.v2i.26. Disponível em: https://proceeding.unefaconference.org/index.php/IHERT/article/view/26. Acesso em: 19 may. 2026.