Soviet ultimatum to Lithuania (English Wikipedia)

Krygeris, Matas (1994). "K. Skučo ir A. Povilaičio byla". Rūstūs prisiminimai (in Lithuanian). Vilnius: Lietuvos technikos muziejus. ISBN 9986-557-02-X. Archived from the original on 6 October 2014. Retrieved 14 June 2011.

lituanus.org (Global: low place; English: low place)

Urbšys, Juozas (Summer 1989). "Lithuania and the Soviet Union 1939–1940: the Fateful Years". Lituanus. 2 (34). ISSN 0024-5089. Archived from the original on 26 September 2019. Retrieved 24 July 2009.

Mite, Valentinas (11 March 2008). "Lithuania: Minister Cites Key Role Between EU And Russia". Radio Free Europe. Archived from the original on 5 August 2009. Retrieved 26 July 2009.

"German-Soviet-Nonaggression-Pact". Encyclopædia Britannica. Archived from the original on 26 August 2009. Retrieved 24 July 2009.
Made, Vahur (2002). "The Baltic Issue during the Cold War". Estonian Foreign Policy at the Cross-Roads. Kikimora Publications. pp. 113–129. ISBN 952-10-0754-0. Archived from the original on 17 January 2010. Retrieved 25 July 2009.
Krygeris, Matas (1994). "K. Skučo ir A. Povilaičio byla". Rūstūs prisiminimai (in Lithuanian). Vilnius: Lietuvos technikos muziejus. ISBN 9986-557-02-X. Archived from the original on 6 October 2014. Retrieved 14 June 2011.
Urbšys, Juozas (Summer 1989). "Lithuania and the Soviet Union 1939–1940: the Fateful Years". Lituanus. 2 (34). ISSN 0024-5089. Archived from the original on 26 September 2019. Retrieved 24 July 2009.
Mite, Valentinas (11 March 2008). "Lithuania: Minister Cites Key Role Between EU And Russia". Radio Free Europe. Archived from the original on 5 August 2009. Retrieved 26 July 2009.

Urbšys, Juozas (Summer 1989). "Lithuania and the Soviet Union 1939–1940: the Fateful Years". Lituanus. 2 (34). ISSN 0024-5089. Archived from the original on 26 September 2019. Retrieved 24 July 2009.
Gurjanovas, Aleksandras (1997). "Gyventojų trėmimo į SSRS gilumą mastas (1941 m. gegužės–birželio mėn.)". Genocidas Ir Resistencija (in Lithuanian). 2 (2). ISSN 1392-3463.
J. G. (June 1975). "1941 m. sukilimo istorija". Aidai (in Lithuanian): 287. ISSN 0002-208X.