APA (7th ed.) Citation

Trotsky, L. (2006). From October to Brest-Litovsk. Project Gutenberg.

Chicago Style (17th ed.) Citation

Trotsky, Leon. From October to Brest-Litovsk. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Trotsky, Leon. From October to Brest-Litovsk. Project Gutenberg, 2006.

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