Cita APA (7a ed.)

Shafii, M. i. I. (1997). Al-Imam Muhammad ibn Idris al-Shafii's al Risala fi usul al-fiqh: Treatise on the foundations of Islamic jurisprudence (2nd ed., repr.). Islamic Texts Society.

Cita Chicago Style (17a ed.)

Shafii, Muhammad ibn Idris. Al-Imam Muhammad Ibn Idris Al-Shafii's Al Risala Fi Usul Al-fiqh: Treatise on the Foundations of Islamic Jurisprudence. 2nd ed., repr. Cambridge: Islamic Texts Society, 1997.

Cita MLA (9a ed.)

Shafii, Muhammad ibn Idris. Al-Imam Muhammad Ibn Idris Al-Shafii's Al Risala Fi Usul Al-fiqh: Treatise on the Foundations of Islamic Jurisprudence. 2nd ed., repr. Islamic Texts Society, 1997.