W. H. Nugroho, M. Shaifullah, and J. Indra Setiawan, “The Effect of Marketing Information Systems on Outpatients Loyalty with Outpatients Satisfaction as a Mediating Variable at Hospital of Harapan Sehat Group”, International Journal of The Newest Social and Management Research, vol. 1, no. 1, pp. 52–59, Jul. 2023.