Mayasari, Oktaviana Arista, Amin Yusuf, and Sunyoto Eko Nugroho. “The Aggressive Behaviour in Elementary School and Factors Can Be Influence”. Journal of Primary Education 8, no. 5 (May 12, 2019): 162-172. Accessed April 20, 2024. https://journal.unnes.ac.id/sju/jpe/article/view/30323.