Rundengan, M., Lumatauw, L., Tulangow, R., Manginsihi, B. K., & Walean , M. C. (2026). Promotional Strategies to Increase Sales of Entrepreneurial Students’ Products at the Independent Campus of Manado State Polytechnic. International Journal of Integrative Sciences, 5(6), 759–770. https://doi.org/10.55927/ijis.v5i6.41