Syarifah, S., N. Purba, and M. Mukidi. “Local Wisdom As an Effort to Increase Immunity With Tawadhu Berwudhu to Prevent the Covid 19 Pandemic in Talang Village, Serdang Bedagai Regency”. INTERNATIONAL JOURNAL OF SOCIAL, POLICY AND LAW, vol. 2, no. 1, Jan. 2021, pp. 53 -57, doi:10.8888/ijospl.v2i1.23.