“PENERAPAN MODEL GARCH (GENERALIZED AUTOREGRESSIVE CONDITIONAL HETEROSCEDASTICITY) DALAM MENGHITUNG NILAI BETA SAHAM INDEKS PEFINDO25”. Jurnal Ilmiah Sains, vol. 18, no. 2, July 2018, pp. 67-74, https://doi.org/10.35799/jis.18.2.2018.19732.