Kolbeinn Sigþórsson (English Wikipedia)

Laul, Eric Hilmersson,Robert (2 September 2021). "Banderoller på Kamratgården efter turbulensen". gp.se.{{cite web}}: CS1 maint: multiple names: authors list (link)

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"Sigthorsson till Blåvitt". IFK Göteborg (in Swedish). 27 January 2021. Retrieved 8 March 2024.
"Pågående intern utredning". 3 September 2021.
"Vägen framåt för Kolbeinn". 21 September 2021.
"Kolbeinn lämnar Blåvitt". 7 December 2021.
IFK Göteborg (21 September 2021). "Gällande nyhet om en av våra spelare | IFK Göteborg – Hela stadens lag". Ifkgoteborg.se. Retrieved 5 April 2022.

"Kolbeinn Sigþórsson". KSÍ. Retrieved 23 October 2013.
"A karla – Lokahópur fyrir EM 2016" (in Icelandic). Knattspyrnusamband Íslands. 9 May 2016. Archived from the original on 12 May 2016. Retrieved 10 May 2016.
"Kolbeinn Sigþórsson". Football Association of Iceland (in Icelandic). Retrieved 28 June 2016.

"Iceland - K. Sigþórsson - Profile with news, career statistics and history". Soccerway. Retrieved 29 February 2020.
"IFK Göteborg vs. AZ". Soccerway. 5 August 2010. Retrieved 27 August 2011.
"AZ vs. Excelsior". Soccerway. 29 August 2010. Retrieved 27 August 2011.
"Twente vs. Ajax". Soccerway. 30 July 2011. Retrieved 27 August 2011.
"Ajax vs. Heerenveen". Soccerway. 14 August 2011. Retrieved 27 August 2011.
"VVV vs. Ajax". Soccerway. 21 August 2011. Retrieved 27 August 2011.
"Ajax vs. Vitesse". Soccerway. 26 May 2011. Retrieved 27 August 2011.
"K. Sigþórsson – Profile". Soccerway.
"Kolbeinn Sigþórsson – Career Honours". Soccerway.

"Nantes presenteert Kolbeinn Sigthorsson". De Telegraaf. 2 July 2015. Retrieved 3 July 2011.

"Kolbeinn Sigthorsson happy he chose AZ over Arsenal". tribalfootball.com. 7 October 2010. Archived from the original on 12 October 2012. Retrieved 27 August 2011.

"IJslander Sigthórsson schittert tegen armzalig VVV" (in Dutch). Voetbal International. 29 January 2011. Retrieved 26 August 2011.
"Ajax biedt AZ twee miljoen euro voor Sigthórsson" (in Dutch). Voetbal International. 3 May 2011. Retrieved 26 August 2011.
"Sigthórsson: 'Droom om met Bergkamp te werken'" (in Dutch). Voetbal International. 4 July 2011. Retrieved 26 August 2011.
"Sigthórsson probeert met transfer loopbaan weer op de rails te krijgen". Voetbal International (in Dutch). 27 January 2021. Retrieved 8 March 2024.

Nantes, FC. "Football Club de Nantes – Site Officiel". fcnantes.com. Archived from the original on 8 January 2016. Retrieved 27 June 2016.
"Kolbeinn Sigthorsson happy he chose AZ over Arsenal". tribalfootball.com. 7 October 2010. Archived from the original on 12 October 2012. Retrieved 27 August 2011.
"Ajax steamrolls past Brøndby IF". Ajax.nl. 20 July 2011. Archived from the original on 25 March 2012. Retrieved 27 August 2011.
"A karla – Lokahópur fyrir EM 2016" (in Icelandic). Knattspyrnusamband Íslands. 9 May 2016. Archived from the original on 12 May 2016. Retrieved 10 May 2016.
"Injured Gylfi Sigurdsson in Iceland's World Cup squad | Goal.com". Archived from the original on 15 May 2018. Retrieved 15 May 2018.