“ANALISA PRAKTIK AKAD ISTISHNA TERHADAP JUAL BELI FIBER OPTIK PERSPEKTIF HUKUM POSITIF DAN HUKUM ISLAM: Studi Di PT Smart Innovation Technology”. 2022. Jurnal Penelitian Multidisiplin Ilmu 1 (3): 579-90. https://doi.org/10.59004/metta.v1i3.194.