APA (7th ed.) Citation

Showalter, D. E. (1991). Tannenberg: Clash of empires. Archon Books.

Chicago Style (17th ed.) Citation

Showalter, Dennis E. Tannenberg: Clash of Empires. Hamden, Conn.: Archon Books, 1991.

MLA (9th ed.) Citation

Showalter, Dennis E. Tannenberg: Clash of Empires. Archon Books, 1991.

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