Wittwer, H. (1992). Urs Fischer, Claudia Di Gallo, Ugo Rondinone, Markus Schwander. Kunstmuseum.
Cita Chicago (17th ed.)Wittwer, Hans-Peter. Urs Fischer, Claudia Di Gallo, Ugo Rondinone, Markus Schwander. Luzern: Kunstmuseum, 1992.
Cita MLA (8th ed.)Wittwer, Hans-Peter. Urs Fischer, Claudia Di Gallo, Ugo Rondinone, Markus Schwander. Kunstmuseum, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.