Ricarda de Northeim (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ricarda de Northeim" in Portuguese language version.

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Global rank Portuguese rank

3books.google.com

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books.google.com

Wilson, Peter H. (2016). Heart of Europe: A History of the Holy Roman Empire (em inglês). Cambridge: Harvard University Press. p. 931
Co, Sotheby Parke Bernet & (1983). The Gospels of Henry the Lion, Count of Saxony, Duke of Bavaria, Helmarshausen Abbey, C. 1173-1175: Which Will be Sold at Auction by Sotheby Parke Bernet & Co. ... London ... Day of Sale Tuesday 6th December 1983, the Sale Beginning at 11 A.m. Precisely and the Gospels of Henry the Lion Being Lot 50 in the Sale (em inglês). Nova Iorque: Sotheby. p. 69
Hammond, Matthew (2013). New Perspectives on Medieval Scotland, 1093-1286 (em inglês). Woodbridge: Boydell & Brewer Ltd. p. 45