YUSNALDI, Eka. Introduction to The Basic Social Concepts of Cooperative Learning At The Elementary Age Level. Jurnal Pendidikan dan Konseling (JPDK), [S. l.], v. 4, n. 6, p. 8138–8146, 2022. DOI: 10.31004/jpdk.v4i6.9647. Disponível em: https://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/9647. Acesso em: 6 jan. 2025.