Turnip, I.R.S. et al. 2023. THE PATTERNS OF APPLYING LEGAL THEORY IN THESIS WRITING OF STUDENTS OF ISLAMIC FAMILY LAW IN THE FACULTY OF SYARI’AH AND LAW AT UIN SUMATERA UTARA. istinbath. 21, 2 (Jan. 2023), 391–415. DOI:https://doi.org/10.20414/ijhi.v21i2.574.