Redigerer Lambert av Spoleto (avsnitt)

== Litteratur ==
* {{NDB|13|432|433|Lambert von Spoleto|Hartmut Becher|115495622}}
* Georg Gresser: ''Lambert v. Spoleto.'' I: ''[[Lexikon für Theologie und Kirche]].'' Band 6, Freiburg 1997, Sp. 617–618 (mit weiterführender Literatur).
* Tommaso di Carpegna Falconieri: [http://www.treccani.it/enciclopedia/lamberto-re-d-italia-imperatore_(Dizionario-Biografico)/ ''Lamberto''.] ''Dizionario Biografico degli Italiani'', LXIII. Rome: 2004, pp.&nbsp;208–211.
* Robert Comyn: ''History of the Western Empire, from its Restoration by Charlemagne to the Accession of Charles V, Vol. I''. 1851
*{{cite book |first=Barbara |last=Kreutz|title=Before the Normans: Southern Italy in the Ninth and Tenth Centuries|publisher=University of Pennsylvania Press|year=1996}}
* Horace K. Mann: ''The Lives of the Popes in the Early Middle Ages, Vol. III: The Popes During the Carolingian Empire, 858–891''. 1925
* Horace K. Mann: ''The Lives of the Popes in the Early Middle Ages, Vol. IV: The Popes in the Days of Feudal Anarchy, 891–999''. 1925
* Chris Wickham: ''Early Medieval Italy: Central Power and Local Society 400–1000''. MacMillan Press: 1981.