Madelung, W., & Schmidtke, S. ([2017]). al-Ṣāḥib Ibn ʿAbbād, promoter of rational theology: Two Muʿtazilī kalām texts from the Cairo Geniza = Kitābān fī ʿilm al-kalām li-'ṣ-Ṣāḥib Ismaʿīl Ibn-ʿAbbād ; an-nuṣūṣ al-ʿarabīya = Kitābān fī ʿilm al-kalām li-'ṣ-Ṣāḥib Ismaʿīl Ibn-ʿAbbād : an-nuṣūṣ al-ʿarabīya. Islamic history and civilization.
Παραπομπή σε μορφή Chicago (17η εκδ.)Madelung, Wilferd, και Sabine Schmidtke. "Al-Ṣāḥib Ibn ʿAbbād, Promoter of Rational Theology: Two Muʿtazilī Kalām Texts from the Cairo Geniza = Kitābān Fī ʿilm Al-kalām Li-'ṣ-Ṣāḥib Ismaʿīl Ibn-ʿAbbād ; An-nuṣūṣ Al-ʿarabīya = Kitābān Fī ʿilm Al-kalām Li-'ṣ-Ṣāḥib Ismaʿīl Ibn-ʿAbbād : An-nuṣūṣ Al-ʿarabīya." Islamic History and Civilization [2017].
Παραπομπή σε μορφή MLA (9th εκδ.)Madelung, Wilferd, και Sabine Schmidtke. "Al-Ṣāḥib Ibn ʿAbbād, Promoter of Rational Theology: Two Muʿtazilī Kalām Texts from the Cairo Geniza = Kitābān Fī ʿilm Al-kalām Li-'ṣ-Ṣāḥib Ismaʿīl Ibn-ʿAbbād ; An-nuṣūṣ Al-ʿarabīya = Kitābān Fī ʿilm Al-kalām Li-'ṣ-Ṣāḥib Ismaʿīl Ibn-ʿAbbād : An-nuṣūṣ Al-ʿarabīya." Islamic History and Civilization, [2017].