Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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