Christy, B., and N. N. A. Triani. “Keefektifan Penerapan Audit Internal Pada Organisasi Nirlaba Gereja GPZ”. Jurnal Akuntansi AKUNESA, vol. 12, no. 1, Sept. 2023, pp. 11-20, https://journal.unesa.ac.id/index.php/akunesa/article/view/23083.