Zulfikri, A. ., T. . Lesmana, and G. . Djuanda. “Impact of Covid-19 Pandemic on Financial Performance in Sub-Sector Pharmaceutical Companies Listed on the IDX”. Nusantara Science and Technology Proceedings, vol. 4, no. 4, June 2021, pp. 138-44, doi:10.11594/nstp.2021.1016.