Columbinemassakern (Swedish Wikipedia)

Vossekuil, B; Fein R, Reddy M, Borum R, Modzeleski W (PDF). The Final Report and Findings of the Safe School Initiative: Implications for the Prevention of School Attacks in the United States. National Threat Assessment Center, Washington, D.C.: U.S. Department of Education, Office of Elementary and Secondary Education, Safe and Drug-Free Schools Program and U.S. Secret Service. http://www.treas.gov/usss/ntac/ssi_final_report.pdf. Läst 24 augusti 2008

truthorfiction.com

The truth concerning Cassie Bernall – truthorfiction.com

usatoday.com

Toppo, Greg (14 april 2009). ”10 years later, the real story behind Columbine”. USA Today. http://www.usatoday.com/news/nation/2009-04-13-columbine-myths_N.htm. Läst 14 april 2009.

vtcng.com

Jonswold, Miranda (3 oktober 2018). ”A Mother’s Reckoning: Sue Klebold Talks Suicide Awareness and the Columbine Aftermath”. The Other Paper. Vermont Community Newspaper Group LLC. https://www.vtcng.com/otherpapersbvt/community/a-mother-s-reckoning-sue-klebold-talks-suicide-awareness-and-the-columbine-aftermath/article_645194f4-7305-52d2-a567-4c0efd516cae.html. Läst 18 januari 2021.

washingtonpost.com

Adams, Lorraine and Dale Russakoff. "Dissecting Columbine's Cult of the Athlete." Washington Post. June 12, 1999.

web.archive.org

”Columbine High School Records | Jefferson County, CO”. www.jeffco.us. Arkiverad från originalet den 18 mars 2019. https://web.archive.org/web/20190318152245/https://www.jeffco.us/1817/Columbine-High-School-Records. Läst 11 februari 2021.
Janelle Brown (23 april 1999). ”Doom, Quake and mass murder” (på engelska). Salon.com. Arkiverad från originalet den 19 september 2008. https://web.archive.org/web/20080919092143/http://www.salon.com/tech/feature/1999/04/23/gamers/index.html. Läst 24 augusti 2008.
”Lessons from Littleton (Part I)” (på engelska). Independent School (magazine). National Association of Independent Schools. Arkiverad från originalet den 27 juli 2016. https://web.archive.org/web/20160727164902/http://www.nais.org/Magazines-Newsletters/ISMagazine/Pages/Lessons-from-Littleton-Part-I.aspx. Läst 24 augusti 2008.
"JonKatz" (26 april 1999). ”Voices From The Hellmouth” (på engelska). Slashdot. Arkiverad från originalet den 21 augusti 2008. https://web.archive.org/web/20080821074326/http://slashdot.org/articles/99/04/25/1438249_F.shtml. Läst 24 augusti 2008.
”Eric and Dylan's Journal Entries”. Arkiverad från originalet den 25 november 2010. https://web.archive.org/web/20101125023411/http://acolumbinesite.com/diary.html. Läst 9 januari 2010.
”Loophole protects Columbine 'witness'” (på engelska). rockymountainnews.com. Denver Publishing Co. 3 oktober 1999. Arkiverad från originalet den 21 februari 2001. https://web.archive.org/web/20010221030107/http://denver.rockymountainnews.com/shooting/1003robyn.shtml.
”Duran gets Prison Term” (på engelska). rockymountainnews.com. Denver Publishing Co. 24 juni 2000. Arkiverad från originalet den 17 april 2001. https://web.archive.org/web/20010417022631/http://denver.rockymountainnews.com/shooting/0624dura1.shtml.
”YouTube - Zero Hour - Massacre at Columbine High Part 2”. Arkiverad från originalet den 29 maj 2019. https://web.archive.org/web/20190529184854/https://www.youtube.com/watch?v=YGS-uJy4E_I&gl=US&hl=en. Läst 10 januari 2010.
”Another timeline of the attacks”. Arkiverad från originalet den 27 april 2005. https://web.archive.org/web/20050427004358/http://www.knowgangs.com/school_resources/columbine/columbine_002.htm.
”Science teacher died a hero”. Arkiverad från originalet den 27 september 2007. https://web.archive.org/web/20070927234555/http://www.denver-rmn.com/shooting/0516dave3.shtml.
Did she really say "yes"? Arkiverad 4 juli 2010 hämtat från the Wayback Machine.
A Columbine Site - Timeline Arkiverad 17 september 2010 hämtat från the Wayback Machine.
Details of the Shooting - In-depth report. cnn.com
Columbine Grand Jury Report in .pdf format Arkiverad 22 september 2004 hämtat från the Wayback Machine.
Cullen, Dave (20 april 2004). ”The Depressive and the Psychopath” (på engelska). slate.com. Arkiverad från originalet den 19 september 2011. https://web.archive.org/web/20110919115650/http://www.slate.com/id/2099203/sidebar/2099208/.
Goldberg, Carey. "For Those Who Dress Differently, an Increase in Being Viewed as Abnormal." Arkiverad 20 december 2016 hämtat från the Wayback Machine. New York Times. 1 maj 1999
”Columbine tragedy was 'wakeup call' for nation's SWAT teams” (på engelska). CNN. 18 augusti 1999. Arkiverad från originalet den 18 december 2008. https://web.archive.org/web/20081218145943/http://www.cnn.com/US/9908/18/columbine.SWAT.01/.
”Witnesses tell of Columbine bullying” (på engelska). rockymountainnews.com. Denver Publishing Co. 3 oktober 2000. Arkiverad från originalet den 21 februari 2001. https://web.archive.org/web/20010221025234/http://denver.rockymountainnews.com/shooting/1003col4.shtml.
Five years after Columbine - is zero tolerance working? zerointelligence.net
”Clinton pushes Congress to pass new gun control legislation” (på engelska). CNN. 7 mars 2000. Arkiverad från originalet den 11 september 2005. https://web.archive.org/web/20050911042609/http://archives.cnn.com/2000/US/03/07/clinton.guns.03/.
”Columbine Memorial —Overview”. The Foothills Foundation. Arkiverad från originalet den 30 april 2008. https://web.archive.org/web/20080430163123/http://www.columbinememorial.org/Overview.asp. Läst 6 maj 2008.
The 10 Worst Games of All Time - Page 3 - PCWorld Arkiverad 4 november 2008 hämtat från the Wayback Machine.

youtube.com

”YouTube - Zero Hour - Massacre at Columbine High Part 2”. Arkiverad från originalet den 29 maj 2019. https://web.archive.org/web/20190529184854/https://www.youtube.com/watch?v=YGS-uJy4E_I&gl=US&hl=en. Läst 10 januari 2010.

Columbinemassakern (Swedish Wikipedia)

acolumbinesite.com

askmen.com

bbc.co.uk

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cbsnews.com

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edition.cnn.com

cnn.com

archives.cnn.com

cnn.net

i.cnn.net

columbinememorial.org

ct.gov

cga.ct.gov

denver-rmn.com

denverpost.com

extras.denverpost.com

ed.gov

eric.ed.gov

jeffco.us

knowgangs.com

lhup.edu

mayhem.net

mnginteractive.com

media.mnginteractive.com

murderpedia.org

nais.org

nytimes.com

politics.nytimes.com

pcworld.com

powerreporting.com

rcfp.org

rockymountainnews.com

denver.rockymountainnews.com

salon.com

slashdot.org

slate.com

snopes.com

treas.gov

truthorfiction.com

usatoday.com

vtcng.com

washingtonpost.com

web.archive.org

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