Firmansyah, Fani, and Adam Jarror. “Pengaruh Citra Merek Dan Kelompok Referensi Terhadap Keputusan Pembelian Smartphone Vivo”. Jurnal Manajerial 8, no. 03 (September 24, 2021): 247–263. Accessed May 22, 2025. https://journal.umg.ac.id/index.php/manajerial/article/view/2547.