Julia, J., 		Wahyuningsih, S., & 		Hayati, M.
2019 Jan 22.  Analisis Model Threshold Generalized Autoregressive  Conditional Heteroskedasticity (TGARCH) dan Model Exponential  Generalized AutoregressiveConditional Heteroskedasticity (EGARCH). EKSPONENSIAL. [Online] 9:2