Zulkafli, Abdul Hadi, Zamri Ahmad, and Eky Ermal M. 2017. “The Performance of Socially Responsible Investments in Indonesia: A Study of the Sri Kehati Index (SKI)”. Gadjah Mada International Journal of Business 19 (1), 59-76. https://dev.journal.ugm.ac.id/v3/gamaijb/article/view/15585.