Bachtiar, C. A., E. Kurniawati, H. T. Juwono, B. Utomo, and N. A. Rahmawati. “Use of Learning Media to Support Resident Doctor Skills in Obstetrics and Gynecology During the COVID-19 Pandemic: A Narrative Review”. Journal of Drug Delivery and Therapeutics, Vol. 11, no. 5-S, Oct. 2021, pp. 164-6, doi:10.22270/jddt.v11i5-S.5022.