Kristanto, Billy. “REFORMASI, CALVIN, DAN PERJAMUAN KUDUS”. Verbum Christi: Jurnal Teologi Reformed Injili 4, no. 2 (Januari 25, 2018): 171–191. Diakses Mei 19, 2025. https://www.verbum.sttrii.ac.id/index.php/VC/article/view/50.