Rachmayanti, Dewi, et al. “The Strategic Assumption to Enhance Top 10 CSR Issues and Trends in the Global Economy: Empirical Study in Indonesia Mining Sector”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 24, no. 6, Nov. 2015, pp. 255-66, https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4933.