SUSIANTI, NURUL. “ANALISIS OPTIMALISASI PRINSIP LEMBAGA KEUANGAN SYARIAH NON-BANK ‘ANOMALY EVENT STUDY JANUARY EFFECT TERHADAP ABNORMAL RETURN SAHAM SYARIAH (JII) DI PASAR MODAL INDONESIA’”. IQTISHADUNA: Jurnal Ekonomi Dan Keuangan Islam, vol. 8, no. 1, June 2017, pp. 23-36, doi:10.20414/iqtishaduna.v8i1.358.