Haryanto, S., Mardiyati, U. and Buchdadi, A.D. 2018. Analyzing Abnormal Return Before And After The Announcement Of Merger And Acquisition In 2018. Journal of Business and Behavioural Entrepreneurship. 2, 1 (Jun. 2018), 9-17. DOI:https://doi.org/10.21009/JOBBE.002.1.02.