Santoso, I., D. L. Setyowati, and A. S. Priyanto. “Kali Loji Festival to Preserve River in Pekalongan City”. JESS (Journal of Educational Social Studies), Vol. 8, no. 1, May 2019, pp. 36-43, https://journal.unnes.ac.id/sju/jess/article/view/30691.