Ramadhany, A., A. Purnomo, and A. Suryadi. “Influence Using the Project-Based Learning Model in History Learning on Learning Outcomes Student Class XI IPS MAN Temanggung”. Indonesian Journal of History Education, Vol. 4, no. 2, Sept. 2019, pp. 39-48, https://journal.unnes.ac.id/sju/ijhe/article/view/18092.