Bella Joy Winarta, Neneng Djuaeriah, and Yosman Bustaman. “CEO Characteristics on Cash Holdings & Overinvestment: Evidence from Indonesian Firms”. Journal of Management Practices, Humanities and Social Sciences, Vol. 2, no. 2, Dec. 2018, pp. 28-34, http://www.global-jws.com/ojs/index.php/global-jws/article/view/11.