Agustina, L. “THE EFFECTIVENESS OF THE CSR PROGRAM IN EMPOWERING THE GRESIK DEAF COMMUNITY BY PT PERTAMINA GAS OPERATING UNIT FOR EAST JAVA REGION”. The Commercium, Vol. 5, no. 01, Jan. 2022, pp. 124-3, https://ejournal.unesa.ac.id/index.php/Commercium/article/view/44791.