Rustianah, Surya Bintarti, Primaraga Sumantri Indra Wicaksana, and Rita Sari. 2022. “THE EFFECT OF PRODUCT QUALITY, PRODUCT VARIATION AND PROMOTION TOWARDS THE PURCHASE DECISION OF VIVA COSMETICS”. Jurnal Ekonomi 11 (01):448-53. https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/280.