Carl, C. (2011). A bishopric between three kingdoms: Calahorra, 1045-1190. Brill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCarl, Carolina. A Bishopric Between Three Kingdoms: Calahorra, 1045-1190. Leiden: Brill, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCarl, Carolina. A Bishopric Between Three Kingdoms: Calahorra, 1045-1190. Brill, 2011.
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