APA (7th ed.) Citation

The Great World War: 1914 - 45. HarperCollins.

Chicago Style (17th ed.) Citation

The Great World War: 1914 - 45. London: HarperCollins.

MLA (9th ed.) Citation

The Great World War: 1914 - 45. HarperCollins.

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