Rugoff, R. (2009). Johannes Kahrs: With an essay by Ralph Rugoff. Hatje Cantz Verlag.
Cita Chicago (17th ed.)Rugoff, Ralph. Johannes Kahrs: With an Essay by Ralph Rugoff. Ostfildern: Hatje Cantz Verlag, 2009.
Cita MLA (8th ed.)Rugoff, Ralph. Johannes Kahrs: With an Essay by Ralph Rugoff. Hatje Cantz Verlag, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.