Utamiati. “Enhancing Tangent Lines Learning Achievement through STAD Cooperative Learning for 8th Grade Students at SMPN 2 Dawarblandong, Mojokerto Regency, Academic Year 2023/2024”. Literasi Nusantara 4, no. 1 (February 25, 2024): 49–65. Accessed August 3, 2025. http://journal.citradharma.org/index.php/literasinusantara/article/view/1001.