prihati, prihati, and Elly Nielwaty. “ Customer Service Officers’ Ethic at PT. Avia Jaya Indah (Business Partner) PT. CPI In Pekanbaru”. Jurnal Niara 12, no. 2 (November 8, 2019): 54-68. Accessed October 4, 2024. https://journal.unilak.ac.id/index.php/nia/article/view/3269.