Becker, L. (2012). George Grosz: The big No : drawings from two portfolios : ecce homo and Hintergrund / Lutz Becker. Hayward Publishing.
Lua i Stíl Chicago (17ú heag.)Becker, Lutz. George Grosz: The Big No : Drawings from Two Portfolios : Ecce Homo and Hintergrund / Lutz Becker. London: Hayward Publishing, 2012.
Lua MLA (8ú heag.)Becker, Lutz. George Grosz: The Big No : Drawings from Two Portfolios : Ecce Homo and Hintergrund / Lutz Becker. Hayward Publishing, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.