Birk, J. C. (2018). Norman Kings of Sicily and the Rise of the Anti-Islamic Critique: Baptized Sultans (Softcover reprint of the original 1st edition 2016.). Springer International Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Birk, Joshua C. Norman Kings of Sicily and the Rise of the Anti-Islamic Critique: Baptized Sultans. Softcover reprint of the original 1st edition 2016. Cham: Springer International Publishing, 2018.
Παραπομπή σε μορφή MLA (9th εκδ.)Birk, Joshua C. Norman Kings of Sicily and the Rise of the Anti-Islamic Critique: Baptized Sultans. Softcover reprint of the original 1st edition 2016. Springer International Publishing, 2018.
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