APA (7th ed.) Citation

Parry, D. H., & Webb, A. (2008). With Haig on the Somme. Project Gutenberg.

Chicago Style (17th ed.) Citation

Parry, D. H., and Archibald Webb. With Haig on the Somme. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Parry, D. H., and Archibald Webb. With Haig on the Somme. Project Gutenberg, 2008.

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