Гвидо IV (герцог Сполето) (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Гвидо IV (герцог Сполето)" in Russian language version.

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fmg.ac

google.ru

books.google.ru

  • Kreutz B. M. Before the Normans. Southern Italy in the Ninth and Tenth Centuries. — Filadelfia, 1996. — P. 66—67. — ISBN 978-0-8122-1587-8.

manfred-hiebl.de

treccani.it

web.archive.org