“Peran Price dan Promotion dalam Memengaruhi Purchase Decision Smartphone Oppo di Puspita Cell Pamekasan   ” (2025) EconoPulse Nexus : Journal of Economics, Business, and Finance, 1(02), hlm. 93–104. Tersedia pada: https://ejournal.omahtabing.com/epnj/article/view/115 (Diakses: 6 Juni 2026).