Kusumaningtyas, Nisa, Hamdan Tri Atmaja, and Subagyo Subagyo. 2019. “The Role of Social Media, Family and School in Building Indonesian Values to Multi-Ethnic Students at SMP Negeri 2 Pekalongan”. JESS (Journal of Educational Social Studies) 8 (1), 19-26. https://journal.unnes.ac.id/sju/jess/article/view/28764.