APA-viite (7. p.)

Hackel, S., & Blok, A. A. 1. D. (1975). The poet and the revolution: Aleksndr Blok's the twelve. Clarendon press.

Chicago-viite (17. p.)

Hackel, Sergei, ja Aleksandr Aleksandrovich 1880-1921. Dvenadtsat Blok. The Poet and the Revolution: Aleksndr Blok's the Twelve. Oxford [Eng.]: Clarendon press, 1975.

MLA-viite (9. p.)

Hackel, Sergei, ja Aleksandr Aleksandrovich 1880-1921. Dvenadtsat Blok. The Poet and the Revolution: Aleksndr Blok's the Twelve. Clarendon press, 1975.