Herberto II de Vermandois (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Herberto II de Vermandois" in Portuguese language version.

refsWebsite

Global rank Portuguese rank

622^nd place

10^th place

google.com.br

Riche, Pierre (1993). The Carolingians: A Family Who Forged Europe (em inglês). Filadélfia: University of Pennsylvania Press. p. 375. ISBN 9780812213423
The Papacy: Gaius-Proxies (em inglês). Abingdon-on-Thames: Psychology Press. 2002. p. 839