Haryanto, Sonny, Umi Mardiyati, and Agung Dharmawan Buchdadi. “Analyzing Abnormal Return Before And After The Announcement Of Merger And Acquisition In 2018”. Journal of Business and Behavioural Entrepreneurship 2, no. 1 (June 18, 2018): 9-17. Accessed May 11, 2024. https://journal.unj.ac.id/unj/index.php/jobbe/article/view/8574.