A. Rahim, Shahrul Amir, et al. “THE ROLES OF PUBLIC RELATIONS IN AN ENVIRONMENTAL AWARENESS CAMPAIGN: A CASE STUDY OF SWM ENVIRONMENT SDN BHD”. Jurnal Kemanusiaan, vol. 17, no. 1-S, May 2019, https://jurnalkemanusiaan.utm.my/index.php/kemanusiaan/article/view/323.