Karuh, T., T. M. Tumbel, and O. F. C. Walangitan. “Pengaruh Harga Terhadap Penjualan Produk Nes-V HWI (Health Wealth International) Di Manado”. Productivity, vol. 3, no. 4, May 2022, pp. 309-14, https://ejournal.unsrat.ac.id/v3/index.php/productivity/article/view/41859.