“A SYSTEMATIC LITERATURE REVIEW: INTEGRATED MARKETING STRATEGIES (CHALLENGES AND OPPORTUNITIES) IN DIGITAL TRANSFORMATION AND CIRCULAR ECONOMY”, BTJ, vol. 1, no. 1, pp. 11–21, Aug. 2025, Accessed: Oct. 29, 2025. [Online]. Available: https://journal.ufdk.ac.id/index.php/btj/article/view/28