APA (7th ed.) Citation

(1974). The unknown revolution 1917-1921. Black and Red [etc.].

Chicago Style (17th ed.) Citation

The Unknown Revolution 1917-1921. Black and Red [etc.], 1974.

MLA (8th ed.) Citation

The Unknown Revolution 1917-1921. Black and Red [etc.], 1974.

Warning: These citations may not always be 100% accurate.