Muchid Albintani, Welly Wirman. “Communication Management Corporate Social Responsibility Program Pt. Perkebunan Nusantara V”. International Journal of Social Sciences and Humanities Invention 2, no. 12 (December 22, 2015). Accessed July 16, 2024. https://valleyinternational.net/index.php/theijsshi/article/view/299.