APA (7th ed.) Citation

Riddell, G. A. R. (1933). War diary 1914 - 1918. Nicholson & Watson.

Chicago Style (17th ed.) Citation

Riddell, George Allardice Riddell. War Diary 1914 - 1918. London: Nicholson & Watson, 1933.

MLA (9th ed.) Citation

Riddell, George Allardice Riddell. War Diary 1914 - 1918. Nicholson & Watson, 1933.

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