Kamarul Zaman, M.A. 2017. Sah (الصحة) dan Batal (البطلان) Menurut Ulama Usul Fiqh: Validity and Invalidity According to Scholars of Islamic Jurisprudence Principle. Perspektif Jurnal Sains Sosial dan Kemanusiaan. 9, 3 (Dec. 2017), 116–124.