APA (7th ed.) Citation

Haig, D. H., Sheffield, G., & Bourne, J. M. (2005). Douglas Haig: War diaries and letters, 1914-1918. Weidenfeld & Nicolson.

Chicago Style (17th ed.) Citation

Haig, Douglas Haig, Gary Sheffield, and J. M. Bourne. Douglas Haig: War Diaries and Letters, 1914-1918. London: Weidenfeld & Nicolson, 2005.

MLA (9th ed.) Citation

Haig, Douglas Haig, et al. Douglas Haig: War Diaries and Letters, 1914-1918. Weidenfeld & Nicolson, 2005.