- 2010 census tables: INEGI Archived 2013-05-02 at the Wayback Machine.
- Nick Valencia (29 December 2010). "Last police agent missing in Mexican border town". cnn.com. Retrieved 30 November 2011.
- Cara Parks (28 December 2010). "Guadalupe Mexico: Ericka Gandara, Last Police Officer, Missing". huffingtonpost.com. Retrieved 30 November 2011.
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