Lismayani, E., A. Rachman, and C. K. Negara. “GRATIFICATION OF PHARMACY COMPANIES AGAINST DOCTORS IN MEDICAL SERVICES IN HOSPITAL”. Jurnal EduHealth, vol. 13, no. 01, Aug. 2022, pp. 230-4, https://ejournal.seaninstitute.or.id/index.php/healt/article/view/387.