Sriyono, Sriyono, Alshaf Febriangga, Novita Velasari, and Niko Fediyanto. 2019. “Instability Of The Stock Return On Food And Baverage Companies Listed In Indonesia Stock Exchange”. American Journal of Economics and Business Management 2 (1):50-60. https://doi.org/10.31150/ajebm.Vol2.Iss1.44.