R. L. . Samadi, S. L. J. . Lapian, S. L. . Mandey, A. L. . Tumbel, and W. J. A. . Tumbuan, “Optimizing PT’s Marketing Strategy. Kurnia Abadi Kawanua Jaya to Increase Sales of Ultra Milk: an Analytical Approach”, EJBSOS, vol. 4, no. 7, pp. 175–183, Jul. 2024.