Al-Hayyach ibn Yúsuf (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Al-Hayyach ibn Yúsuf" in Spanish language version.

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1brillonline.com

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1books.google.com

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books.google.com

Kennedy, 2004, p. 100. Kennedy, Hugh N. (2004). The Prophet and the Age of the Caliphates: The Islamic Near East from the 6th to the 11th Century (Segunda edición). Harlow, UK: Pearson Education Ltd. ISBN 0-582-40525-4.

brillonline.com

referenceworks.brillonline.com

Dietrich, 1991, p. 40. Dietrich, A. (1991). «al-Ḥad̲j̲d̲j̲ād̲j̲ b. Yūsuf». The Encyclopedia of Islam, New Edition, Volume II: C–G. Leiden and New York: BRILL. pp. 39-42. ISBN 90-04-07026-5.