Guillermo González Calderoni (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Guillermo González Calderoni" in Spanish language version.

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archive.org

Poppa, 1998, p. 383. Poppa, T. (1998). Drug Lord: The Life and Death of a Mexican Kingpin. Seattle: Demand Publications. ISBN 9780966443004.
Bowden, 2002, p. 164. Bowden, C. (2002). Down by the River: Drugs, Money, Murder, and Family. New York: Simon & Schuster. ISBN 9780684853437.