Haifani, Ayun, Cahyo Utomo, and Ibnu Sodiq. 2020. “Development of Cardboard Puppet Teaching Media on General Attack Materials March 1, 1949 at SMA Negeri 1 Bukateja Purbalingga”. Indonesian Journal of History Education 5 (1), 25-36. https://journal.unnes.ac.id/sju/ijhe/article/view/19903.