APA (7th ed.) Citation

Sassoon, S. (2005). The War Poems of Siegfried Sassoon. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sassoon, Siegfried. The War Poems of Siegfried Sassoon. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Sassoon, Siegfried. The War Poems of Siegfried Sassoon. Project Gutenberg, 2005.

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