APA (7th ed.) Citation

Showalter, D. E. (2004). Tannenberg: Clash of empires, 1914. Brassey's.

Chicago Style (17th ed.) Citation

Showalter, Dennis E. Tannenberg: Clash of Empires, 1914. Washington, D.C: Brassey's, 2004.

MLA (9th ed.) Citation

Showalter, Dennis E. Tannenberg: Clash of Empires, 1914. Brassey's, 2004.