879 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "879" in English language version.

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2books.google.com

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archive.org

Kennedy, Hugh N. (2001). The Armies of the Caliphs: Military and Society in the Early Islamic State. London and New York: Routledge. pp. 153-154. ISBN 0-415-25093-5.

books.google.com

Laet, Sigfried J. de (1994). History of Humanity: From the seventh to the sixteenth century (Illustrated ed.). UNESCO. ISBN 978-92-3-102813-7.
Lipman, Jonathan N. (1997). Familiar Strangers: A History of Muslims in Northwest China (Illustrated ed.). University of Washington Press. ISBN 978-0-295-97644-0.