Rizani, Cyrilla Wilda, Hichmaed Tachta Hinggo, and Hammam Zaki. “Pengaruh Kualitas Produk, Promosi, Harga, Dan Garansi Produk Terhadap Keputusan Pembelian Produk Tupperware Di Pekanbaru”. ECOUNTBIS: Economics, Accounting and Business Journal 2, no. 2 (May 31, 2022): 366–376. Accessed April 26, 2024. https://jom.umri.ac.id/index.php/ecountbis/article/view/416.