Opel (Danish Wikipedia)

Kirchfeld, Aaron; Philip, Siddharth; Welch, David; Hammond, Ed; David, Ruth (14. februar 2017). "Peugeot Owner PSA Explores Acquisition of GM's Opel Division". Bloomberg. Hentet 10. marts 2017.
Welch, David (6. marts 2017). "GM to Make Pension Payments for Years Just to Get Out of Europe". Bloomberg. Hentet 25. marts 2017.

bnf.fr (Global: 124^th place; Danish: 1,402^nd place)

gallica.bnf.fr

Salon de Bruxelles 1912, limousine Opel 24/30 HP (Bibliothèque Nationale de France)

books.google.com (Global: 3^rd place; Danish: 25^th place)

Alfred P. Sloan: My Years with General Motors, 1964 (ISBN 978-0385042352), pp. 330-334

carscoops.com (Global: 2,749^th place; Danish: low place)

"GM Decides to Keep Opel After All, Cancels Sale with Magna". 4. november 2009. Hentet 19. marts 2017.

cartype.com (Global: low place; Danish: low place)

"Lutzmann". Cartype. Arkiveret fra originalen 6. juli 2017. Hentet 13. juni 2009.

circuitsofthepast.com (Global: low place; Danish: low place)

"Opel-Rennbahn – The old Opel Test Track – Circuits of the past". Circuits of the Past. 28. november 2018. Hentet 3. april 2021.

companieshistory.com (Global: low place; Danish: low place)

"Opel" (amerikansk engelsk). 6. december 2013. Hentet 1. oktober 2016.

dw.com (Global: 204^th place; Danish: 1,068^th place)

(www.dw.com), Deutsche Welle. "End of the line for Opel car manufacturer in Bochum – News – DW.COM – 05.12.2014". Deutsche Welle. Hentet 19. marts 2017.
"Carmaker Opel pulls out of China, to build Buicks for parent GM". Deutsche Welle. 28. marts 2014. Hentet 25. marts 2017.

galegroup.com (Global: 1,830^th place; Danish: low place)

link.galegroup.com

Weernink, Wim Oude (21. juni 1999). "Opel: German Roots, Global Reach". Automotive News Europe. s. 24B.

gm.com (Global: 2,284^th place; Danish: 5,996^th place)

"History & Heritage - Our Company - GM.com". Arkiveret fra originalen 9. december 2015. Hentet 19. marts 2017.

groupe-psa.com (Global: low place; Danish: low place)

"2018 Annual Results – PSA Groupe" (PDF). Arkiveret fra originalen 10. august 2019.

jewishjournal.com (Global: 1,020^th place; Danish: 1,779^th place)

Black, Edwin (30. november 2006). "Hitler's carmaker: How General Motors helped jump-start the Third Reich's military machine". The Jewish Journal of Greater Los Angeles.

main-spitze.de (Global: low place; Danish: low place)

Rüsselsheim: Mindestens 500 Opel-Zwangsarbeiter umgekommen Arkiveret 6. juni 2015 hos Wayback Machine in Rhein-Main-Zeitung vom 6. Juni 2015

motorhistorisk.dk (Global: low place; Danish: low place)

Dengang Danmark producerede biler - Motorhistorisk Samråd

onb.ac.at (Global: 762^nd place; Danish: 7,942^nd place)

anno.onb.ac.at

Der Opel „Regent“ 1932 (Artikel i Allgemeinen Automobil-Zeitung, 1931

opel-tv-footage.com (Global: low place; Danish: low place)

Das RAK-Protokoll. En 25 minutter lang dokumentarfilm om Opel RAK programmet

opel.com (Global: low place; Danish: 5,723^rd place)

"Facts".
"Opel History". Opel. 1. marts 2018. Hentet 1. marts 2018.
"Locations & Facts". Opel. 1. marts 2018. Hentet 1. marts 2018.

opelpost.com (Global: low place; Danish: low place)

"Opel Sounds in the Era of Rockets". 23. maj 2018.

qz.com (Global: 1,110^th place; Danish: 2,788^th place)

Karaian, Jason (18. februar 2017). "After losing $20 billion over 17 dismal years, General Motors may finally quit Europe". Hentet 19. marts 2017.

reuters.com (Global: 49^th place; Danish: 129^th place)

"PSA targets Opel turnaround as GM exits Europe". Reuters. 6. marts 2017. Hentet 1. marts 2018.
Frost, Lawrence; Taylor, Edward (6. marts 2017). "PSA targets Opel turnaround as GM exits Europe". Reuters. Hentet 10. marts 2017.

sauerlandkurier.de (Global: low place; Danish: low place)

Exponat des Monats Sauerland Kurier, 12. juni 2019

spiegel.de (Global: 66^th place; Danish: 194^th place)

"Nach Dauerkrise: Opel verbucht ersten Gewinn seit fast 20 Jahren". Spiegel Online. 2019-02-26. Hentet 2019-02-26.

usatoday.com (Global: 41^st place; Danish: 186^th place)

Phelan, Mark (9. marts 2017). "Soul searching at GM after selling Opel". Detroit Free Press. Hentet 11. marts 2017.

vhkk.org (Global: low place; Danish: low place)

Frigidaire Unternehmensgeschichte Rüsselsheim, Historische Kälte- und Klimatechnik e.V., hentet 4. april 2024

washingtonpost.com (Global: 34^th place; Danish: 97^th place)

Dobbs, Michael (30. november 1998). "Ford and GM Scrutinized for Alleged Nazi Collaboration". The Washington Post.

web.archive.org (Global: 1^st place; Danish: 1^st place)

"Opel Adam". Auto-power-girl.com. Arkiveret fra originalen 1. juli 2017. Hentet 19. november 2014.
"Lutzmann". Cartype. Arkiveret fra originalen 6. juli 2017. Hentet 13. juni 2009.
"History & Heritage - Our Company - GM.com". Arkiveret fra originalen 9. december 2015. Hentet 19. marts 2017.
70 Jahre Opel Olympia: Opel baute das erste deutsche Großserienauto mit selbsttragender Karosserie , 20. april 2005, media.gm.com, arkiveret 27. september 2014
Rüsselsheim: Mindestens 500 Opel-Zwangsarbeiter umgekommen Arkiveret 6. juni 2015 hos Wayback Machine in Rhein-Main-Zeitung vom 6. Juni 2015
"2018 Annual Results – PSA Groupe" (PDF). Arkiveret fra originalen 10. august 2019.

welt.de (Global: 201^st place; Danish: 473^rd place)

Britta Bode (12. marts 2006). "Wie Opel die Nazis unterstützte". Die Welt. Hentet 29. november 2016.

zeit.de (Global: 267^th place; Danish: 912^th place)

Die Zeit Nr. 8 (21. februar 1964): Der große Sprung nach vorn
Michaels, Heinz (21. februar 1964). ""...Mit einer Produktion von 130 267 Fahrzeugen waren sie im Jahre 1937 die größte Automobilfabrik Europas und die siebtgrößte der Welt". Der große Sprung nach vorn: Kann Opel Deutschlands größter Autolieferant werden?. Die Zeit (online). Hentet 13. september 2015.

Opel (Danish Wikipedia)

airforcemag.com (Global: 3,541st place; Danish: low place)

airspacemag.com (Global: 4,171st place; Danish: 4,997th place)

archive.org (Global: 6th place; Danish: 12th place)

auto-power-girl.com (Global: low place; Danish: low place)

autoblog.com (Global: 931st place; Danish: 2,734th place)

autocar.co.uk (Global: 1,872nd place; Danish: 7,772nd place)

autonews.com (Global: 2,398th place; Danish: 6,494th place)

europe.autonews.com

autoscout24.de (Global: low place; Danish: 9,840th place)

autovistagroup.com (Global: low place; Danish: low place)

autovista24.autovistagroup.com

bbc.co.uk (Global: 8th place; Danish: 14th place)

bbc.com (Global: 20th place; Danish: 42nd place)

best-selling-cars.com (Global: low place; Danish: low place)

bloomberg.com (Global: 99th place; Danish: 374th place)

bnf.fr (Global: 124th place; Danish: 1,402nd place)

gallica.bnf.fr

books.google.com (Global: 3rd place; Danish: 25th place)

carscoops.com (Global: 2,749th place; Danish: low place)

cartype.com (Global: low place; Danish: low place)

circuitsofthepast.com (Global: low place; Danish: low place)

companieshistory.com (Global: low place; Danish: low place)

dw.com (Global: 204th place; Danish: 1,068th place)

galegroup.com (Global: 1,830th place; Danish: low place)

link.galegroup.com

gm.com (Global: 2,284th place; Danish: 5,996th place)

groupe-psa.com (Global: low place; Danish: low place)

jewishjournal.com (Global: 1,020th place; Danish: 1,779th place)

main-spitze.de (Global: low place; Danish: low place)

motorhistorisk.dk (Global: low place; Danish: low place)

onb.ac.at (Global: 762nd place; Danish: 7,942nd place)

anno.onb.ac.at

opel-tv-footage.com (Global: low place; Danish: low place)

opel.com (Global: low place; Danish: 5,723rd place)

opelpost.com (Global: low place; Danish: low place)

qz.com (Global: 1,110th place; Danish: 2,788th place)

reuters.com (Global: 49th place; Danish: 129th place)

sauerlandkurier.de (Global: low place; Danish: low place)

spiegel.de (Global: 66th place; Danish: 194th place)

usatoday.com (Global: 41st place; Danish: 186th place)

vhkk.org (Global: low place; Danish: low place)

washingtonpost.com (Global: 34th place; Danish: 97th place)

web.archive.org (Global: 1st place; Danish: 1st place)

welt.de (Global: 201st place; Danish: 473rd place)

zeit.de (Global: 267th place; Danish: 912th place)

airforcemag.com (Global: 3,541^st place; Danish: low place)

airspacemag.com (Global: 4,171^st place; Danish: 4,997^th place)

archive.org (Global: 6^th place; Danish: 12^th place)

autoblog.com (Global: 931^st place; Danish: 2,734^th place)

autocar.co.uk (Global: 1,872^nd place; Danish: 7,772^nd place)

autonews.com (Global: 2,398^th place; Danish: 6,494^th place)

autoscout24.de (Global: low place; Danish: 9,840^th place)

bbc.co.uk (Global: 8^th place; Danish: 14^th place)

bbc.com (Global: 20^th place; Danish: 42^nd place)

bloomberg.com (Global: 99^th place; Danish: 374^th place)

bnf.fr (Global: 124^th place; Danish: 1,402^nd place)

books.google.com (Global: 3^rd place; Danish: 25^th place)

carscoops.com (Global: 2,749^th place; Danish: low place)

dw.com (Global: 204^th place; Danish: 1,068^th place)

galegroup.com (Global: 1,830^th place; Danish: low place)

gm.com (Global: 2,284^th place; Danish: 5,996^th place)

jewishjournal.com (Global: 1,020^th place; Danish: 1,779^th place)

onb.ac.at (Global: 762^nd place; Danish: 7,942^nd place)

opel.com (Global: low place; Danish: 5,723^rd place)

qz.com (Global: 1,110^th place; Danish: 2,788^th place)

reuters.com (Global: 49^th place; Danish: 129^th place)

spiegel.de (Global: 66^th place; Danish: 194^th place)

usatoday.com (Global: 41^st place; Danish: 186^th place)

washingtonpost.com (Global: 34^th place; Danish: 97^th place)

web.archive.org (Global: 1^st place; Danish: 1^st place)

welt.de (Global: 201^st place; Danish: 473^rd place)

zeit.de (Global: 267^th place; Danish: 912^th place)