LPPM, JURNAL DARMA AGUNG; SIRAIT, Ronnie MT. DETERMINAN LOYALITAS PELANGGAN, STUDI EMPIRIS PADA MIKIE HOLIDAY & RESORT BERASTAGI. JURNAL GLOBAL MANAJEMEN, [S.l.], v. 9, n. 2, p. 95-104, june 2021. ISSN 2715-6001. Tersedia pada: <https://jurnal.darmaagung.ac.id/index.php/global/article/view/998>. Tanggal Akses: 18 may 2024