Bernardo I de Italia (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Bernardo I de Italia" in Spanish language version.

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McKitterick, Rosamond (1983). The Frankish kingdoms under the Carolingians, 751-987. Longman. ISBN 0-582-49005-7. OCLC 8452695. Consultado el 10 de abril de 2023.
Riché, Pierre (1993). The Carolingians : a family who forged Europe. University of Pennsylvania Press. ISBN 0-8122-3062-0. OCLC 26722319. Consultado el 10 de abril de 2023.