APA (7th ed.) Citation

Bone, M., Montague, C. E., & Haig, D. H. (1917). The Western Front. Published by authority of the War Office from the offices of "Country Life" Ltd..

Chicago Style (17th ed.) Citation

Bone, Muirhead, C. E. Montague, and Douglas Haig Haig. The Western Front. London: Published by authority of the War Office from the offices of "Country Life" Ltd., 1917.

MLA (9th ed.) Citation

Bone, Muirhead, et al. The Western Front. Published by authority of the War Office from the offices of "Country Life" Ltd., 1917.