?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Mohammad+Farhan+Qudratullah%2C+NIM.%3A+22300011019&rft.aulast=Mohammad+Farhan+Qudratullah&rft.aufirst=NIM.%3A+22300011019&rft.degree=Doctoral&rft.date=20+January+2026&rft.title=SPEKULASI%3A+MODEL+MATEMATIKA%2C+IMPLEMENTASI%2C+DAN+DAMPAKNYA+PADA+KINERJA+SAHAM+SYARIAH+DI+INDONESIA&rft.inst=UIN+SUNAN+KALIJAGA+YOGYAKARTA&rft.tpages=329