Muhibbin, Zainul, dkk. “Social Piety Index for Character Building in Indonesia: A Case Study of The Society of Mojokerto City”. Jurnal Sosial Humaniora, vol. 15, no. 2, Maret 2025, hlm. 129-45, https://journal.its.ac.id/index.php/jsh/article/view/2775.