Kasenda, M. M., J. A. F. Kalangi, and D. D. S. Mukuan. “Pengaruh Marketing Mix Strategy Terhadap Consumer Loyality Pada PT. Hasjrat Abadi Tendean Manado”. Productivity, vol. 2, no. 4, July 2021, pp. 276-81, https://ejournal.unsrat.ac.id/v3/index.php/productivity/article/view/34879.