Yunita, Sri, et al. “The Feasibility of Flipbook-Based Wawasan Nusantara Teaching Materials in Citizenship Learning”. Jurnal Civics: Media Kajian Kewarganegaraan, vol. 22, no. 1, Feb. 2025, pp. 101-9, https://jurnal.uny.ac.id/index.php/civics/article/view/83204.