APA (7th ed.) Citation

Schrader, H. (2009). Codename Valkyrie: General Friedrich Olbricht and the plot against Hitler. Haynes.

Chicago Style (17th ed.) Citation

Schrader, Helena. Codename Valkyrie: General Friedrich Olbricht and the Plot Against Hitler. Sparkford, UK ; Newbury Park, Calif.: Haynes, 2009.

MLA (9th ed.) Citation

Schrader, Helena. Codename Valkyrie: General Friedrich Olbricht and the Plot Against Hitler. Haynes, 2009.

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