Achjari, D., and A. E. Wahyuningtyas. “Information Technology Investment Announcements and Firms’ Value: The Case of Indonesian Firms in the Financial and Non-Financial Sectors”. Asian Journal of Business and Accounting, vol. 7, no. 2, Dec. 2014, https://ajba.um.edu.my/index.php/AJBA/article/view/2697.