Fuad, L., D. Tamtomo, and E. S. Sulaeman. “Multilevel Analysis on the Effect of Marketing Mix Strategy Toward Patient Satisfaction in Magelang, Central Java”. Journal of Health Policy and Management, vol. 4, no. 1, Jan. 2019, pp. 39-46, http://thejhpm.com/index.php/thejhpm/article/view/86.