Putra, Liandri Darma, and Eko Harry Susanto. 2019. “Pengaruh Marketing Mix 4P Dan Perceived Quality Terhadap Purchase Decision Smartphone Vivo”. Jurnal Manajemen Bisnis Dan Kewirausahaan 3 (6). Jakarta, Indonesia:77-82. https://doi.org/10.24912/jmbk.v3i6.6101.