Toby Archer: International Terrorism and Finland. Ulkopoliittinen instituutti (Finnisches Institut für Außenpolitik), Espoo 2004, ISBN 951-769-155-6, S.14–15 (englisch, ethz.ch [PDF]).
Christina Anderson: Fatal Knife Attack in Finland Is Investigated as Terrorism. In: The New York Times. 19. August 2017, ISSN0362-4331 (nytimes.com [abgerufen am 7. September 2017]).
Sewell Chan, Mikko Takkunen: Finland Attack Suspect, a Moroccan Youth, Was Flagged for Extremist Views. In: The New York Times. 21. August 2017, ISSN0362-4331 (nytimes.com [abgerufen am 7. September 2017]).
Christina Anderson: Fatal Knife Attack in Finland Is Investigated as Terrorism. In: The New York Times. 19. August 2017, ISSN0362-4331 (nytimes.com [abgerufen am 7. September 2017]).
Sewell Chan, Mikko Takkunen: Finland Attack Suspect, a Moroccan Youth, Was Flagged for Extremist Views. In: The New York Times. 21. August 2017, ISSN0362-4331 (nytimes.com [abgerufen am 7. September 2017]).