Jao, Robert, and David Jimmiawan. “Analisis Perbedaan Abnormal Return, Volume Perdagangan Saham Sebelum Dan Sesudah Pengumuman Corporate Image Award”. Bongaya Journal of Research in Accounting (BJRA) 1, no. 2 (October 31, 2018): 25–31. Accessed April 28, 2024. http://ojs.stiem-bongaya.ac.id/BJRA/article/view/80.