Pío I (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pío I" in Spanish language version.

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books.google.com

Platina, Anthony F. D'Elia (2008). Lives of the Popes: Antiquity, Volumen 1. Harvard University Press. ISBN 0674028198.

Wace y Piercy, 1911. Wace, Henry; Piercy, William Coleman (1911). «Pius I., bp. of Rome». En Wikisource, ed. Dictionary of Christian Biography and Literature to the End of the Sixth Century (en inglés). Londres: John Murray.
Kirsch, 1913. Kirsch, Johann Peter (1913). «Pope St. Pius I». Catholic Encyclopedia (en inglés). Nueva York: Robert Appleton Company.