Sugiat, Jajang. “Penerapan Strategi Pemasaran Relasional Terhadap Pembentukan Nilai Jasa Perguruan Tinggi”. Business Innovation and Entrepreneurship Journal 1, no. 1 (May 4, 2019): 21-28. Accessed July 2, 2026. http://ejournals.fkwu.uniga.ac.id/index.php/BIEJ/article/view/8.