Suswati, Liza, and Nora Pitri Nainggolan. “The Influence of Product Variations, Digital Marketing and Brand Image on the Purchase Decision of Janji Jiwa Coffee in Batam”. Jurnal Disrupsi Bisnis 7, no. 2 (March 11, 2024): 295–307. Accessed December 22, 2024. https://openjournal.unpam.ac.id/index.php/DRB/article/view/37565.