Setiawan, D., S. T. Hananto, and P. L. Kee. “An Analysis Of Market Reaction To Chief Executive Turnover Announcement In Indonesia: A Trading Volume Approach”. Journal of Business & Economics Research (JBER), vol. 9, no. 11, Oct. 2011, pp. 63-72, doi:10.19030/jber.v9i11.6501.