“Development of PeCiKu TAHeS Educational Media (Hand Washing Habits and Short Nails for Grat and Healthy Children) to Increase Knowledge and Attitudes to Prevent Covid 19 at Tanjungsari 2 Elementary School, Blitar City” (2021) JOSAR (Journal of Students Academic Research), 6(2), pp. 298–312. doi:10.35457/josar.v6i2.2068.