Newton, Newton, Agustini Tanjung, Helen Parkhurst, and Felina Co Young. “Determinants of Sales Volume in Es Teh Cup MSMEs: The Influence of Personal Selling and Distribution, Moderated by Packaging”. Oikonomia : Journal of Management Economics and Accounting 2, no. 3 (May 31, 2025): 150–165. Accessed May 10, 2026. https://jurnalhafasy.com/index.php/oikonomia/article/view/361.