Zuida Ratih Hendrastuti, Y. Franita, S. S. Adawiyah, and B. Ardiyanto. “Development of a Flipbook-Based E-Module on Linear Programming for Mathematics Education Students”. Hipotenusa: Journal of Mathematical Society, vol. 7, no. 2, Dec. 2025, pp. 219-30, https://ejournal.uinsalatiga.ac.id/index.php/hipotenusa/article/view/5104.