APA (7th ed.) Citation

(1977). The First World War, 1914-1918. Allen Lane, Penguin Books.

Chicago Style (17th ed.) Citation

The First World War, 1914-1918. Allen Lane, Penguin Books, 1977.

MLA (8th ed.) Citation

The First World War, 1914-1918. Allen Lane, Penguin Books, 1977.

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