Songaila was member of the Central Committee of the Communist Party of Lithuania (1962–1981), Chairman of the Council of Ministers (1981–1985), Chairman of the Presidium of the Supreme Soviet of the Lithuanian SSR (1985–1987), and First Secretary of the Communist Party of Lithuania (1987–1988). When Songaila targeted rallies of radical pro-independence Lithuanian Liberty League, he was forced to resign. He was replaced by Algirdas Brazauskas, who supported Sąjūdis movement and Lithuania's declaration of independence in March 1990.
- (Lithuanian) Jonas Zinkus, et al., ed. (1985–1988). "Songaila, Ringaudas". Tarybų Lietuvos enciklopedija 4. Vilnius, Lithuania: Vyriausioji enciklopedijų redakcija. p. 72. LCC 86232954.
- Beissinger, Mark R. (2002). Nationalist mobilization and the collapse of the Soviet State. Cambridge University Press. p. 175. ISBN 978-0-521-00148-9.
|Party political offices|
|First Secretary of the Communist Party of Lithuania
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