H. Silaban, A. N. B. Weubun, and W. Salutondok, “An Overview of Public Knowledge and Attitudes towards the Use of Herbs during the Covid-19 Pandemic”, J. Drug Delivery Ther., vol. 12, no. 4-S, pp. 147–153, Aug. 2022, doi: 10.22270/jddt.v12i4-S.5574.