846 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "846" in English language version.

refsWebsite

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2books.google.com

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books.google.com

Fine, John V. A. Jr. (1991) [1983]. The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century. Ann Arbor: University of Michigan Press. p. 110. ISBN 0-472-08149-7.
Goldberg 2006, p. 140. Goldberg, Eric J. (2006). Struggle for Empire: Kingship and Conflict under Louis the German, 817-876. Ithaca, NY: Cornell University Press. ISBN 9780801438905.