Ningrum, E. P., N. K. Dewi, M. Siahaan, and Dea. “Analysis of Internal Control on Cash Receiving (Case Study at the Pratama Tiara Bunda Clinic)”. Jurnal Ekonomi Dan Statistik Indonesia, Vol. 2, no. 2, Sept. 2022, pp. 229-35, doi:10.11594/jesi.02.02.11.