Pietro II Orseolo (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pietro II Orseolo" in English language version.

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en.wikisource.org

Chisholm, Hugh, ed. (1911). "Orseole s.v. Pietro Orseole II" . Encyclopædia Britannica. Vol. 20 (11th ed.). Cambridge University Press. p. 330.