SIREGAR, Roselinda. PENINGKATAN PRESTASI BELAJAR SEJARAH MELALUI METODE PEMBELAJARAN KOOPERATIF NUMBERED HEAD TOGETHER (NHT) SISWA KELAS XI IPS2 SMA NEGERI 1 TEBING TINGGI. JURNAL HANDAYANI PGSD FIP UNIMED, [S. l.], v. 5, n. 2, p. 172–186, 2016. DOI: 10.24114/jh.v5i2.6533. Disponível em: http://103.242.233.34/index.php/handayani/article/view/6533. Acesso em: 31 jan. 2025.