Dedi Muhtadi, YL Sukestiyarno, Isti Hidayah, and Amin Suyitno. “How Does The Ability of Pedagogical Content Knowledge Preservice Teacher Students in Mathematics Learning?”. International Conference on Science, Education, and Technology, vol. 8, no. 1, Oct. 2022, pp. 550-6, https://proceeding.unnes.ac.id/ISET/article/view/1803.