Husna, Febriza Laila, and Maria Montessori. “The Role of Numbered Heads Together in Developing 21st-Century Skills in Civic Education: Evidence from Indonesian Junior High School Students”. AL-ISHLAH: Jurnal Pendidikan, vol. 17, no. 3, Sept. 2025, pp. 5285-98, doi:10.35445/alishlah.v17i3.7344.