ANINDYA FAJARINI; FIKRI APRIYONO. Pengembangan Bahan Ajar IPS Berbasis 21st Century Skills (4 Learning Skills) Bagi Siswa SMP. Jurnal Penelitian dan Pendidikan IPS, [S. l.], v. 18, n. 2, p. 151–163, 2024. DOI: 10.21067/jppi.v18i2.10864. Disponível em: http://ejournal.unikama.ac.id/index.php/JPPI/article/view/10864. Acesso em: 6 dec. 2025.