Omayra Sánchez: Perbedaan antara revisi

*{{cite book |url=http://www.banrepcultural.org/blaavirtual/politica/sangres/nina.htm |title=Colombia y Otras Sangres |year=1987 |last=Barragán |first=Germán Santa María |publisher=[[University ofUniversitas Texas]] |language=es |isbn=978-958-614-248-9 |url-status=dead |archive-url=https://web.archive.org/web/20121011031151/http://www.banrepcultural.org/blaavirtual/politica/sangres/nina.htm |archive-date=October 11, Oktober 2012 |ref=harv}}

*{{cite book |last=Barragán |first=Germán Santa María |title=No Morirás |publisher=Andres Bollo |year=1994 |isbn=978-958-06-0084-8 |ref=harv}}

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*{{cite journal |doi=10.1080/10106040308542276 |last=Villegas |first=Henry |title=Display of the Nevado del Ruiz Volcanic Hazard Map Using GIS |journal=Geocarto International |volume=18 |issue=3 |pages=5–13 |date=September 2003 |url=http://www.geocarto.com.hk/cgi-bin/pages1/sep03/display.pdf |publisher=Geocarto International Centre |s2cid=131190497 |access-date=July 20, Juli 2010 |archive-url=https://web.archive.org/web/20110721085338/http://www.geocarto.com.hk/cgi-bin/pages1/sep03/display.pdf |archive-date=July 21, Juli 2011 |url-status=dead |ref=harv}}

*{{cite web |url=http://lasa.international.pitt.edu/members/congress-papers/lasa2009/files/ZeidermanAustin.pdf |title=Life at Risk: Biopolitics, Citizenship, and Security in Colombia |last=Zeiderman |first=Austin |work=2009 Congress of the Latin American Studies Association |date=June 11, Juni 2009 |access-date=July 22, Juli 2010 |ref=harv}}