khulufiah, elly imrotul. “sing edia to each ifferent earning tyle in and II rade of ocational chool of edical usantara amekasan”. URNAL LMIAH AHASA AN ASTRA, vol. 5, no. 1, Apr. 2019, pp. 1-12, doi:10.21067/jibs.v5i1.2079.