Sulasiwi, I. F., S. K. Handayanto, and W. Wartono. “ksplorasi eterampilan elf-irected earning (SDL) iswa MA: escriptive esearch tudy”. omentum: hysics ducation ournal, vol. 3, no. 1, June 2019, pp. 42-52, doi:10.21067/mpej.v3i1.3345.