Hapsa, Hapsa. “The Relationship of Marketing Mix With Patient Loyalty At Inpatient Unit Of Undata General Hospital”. Preventif : Jurnal Kesehatan Masyarakat 10, no. 1 (July 9, 2020): 13-23. Accessed May 5, 2024. https://jurnal.fkm.untad.ac.id/index.php/preventif/article/view/116.