PERTIWI, Dian Esti; SAMSURI, Taufik; MULIADI, Agus. Peningkatan Hasil Belajar Kognitif Siswa Menggunakan Model Pembelajaran Kooperatif Tipe Group Investigation. Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika, [S. l.], v. 2, n. 2, p. 135–141, 2019. DOI: 10.36312/e-saintika.v2i2.114. Disponível em: https://journal-center.litpam.com/index.php/e-Saintika/article/view/114. Acesso em: 8 feb. 2026.