Dai, K. E. P., J. A. F. Kalangi, and J. J. Rogahang. “Pengaruh Kualitas Pelayanan Terhadap Kepuasan Konsumen Jasa Service PT. Kumala Cemerlang Abadi (Wuling Motors) Malalayang”. Productivity, vol. 3, no. 2, Jan. 2022, pp. 102-6, https://ejournal.unsrat.ac.id/v3/index.php/productivity/article/view/38141.