@article{Martanto_Pramono_Sanjoto_2021, title={The Implementation of Blended Learning in Social Studies Learning for 21st Century Skills Enhancement}, volume={10}, url={https://journal.unnes.ac.id/sju/jess/article/view/44502}, DOI={10.15294/jess.v10i1.44502}, number={1}, journal={JESS (Journal of Educational Social Studies)}, author={Martanto, Siswo and Pramono, Suwito and Sanjoto, Tjaturrahono}, year={2021}, month={Jun.}, pages={9-18}