Hendrawan, Riko, Gede Teguh Laksana, and Wiwin Aminah. 2020. “Can The IDX Be Hegded ? : Comparison of Black Scholes Option Model And Garch Option Model Using Long Strangle Strategy”. Jurnal Manajemen Indonesia 20 (3):252-59. https://doi.org/10.25124/jmi.v20i3.3521.