Frei, M. (2008). Dieter Roth, André Thomkins. Galerie & Edition Marlene Frei.
Cita Chicago (17th ed.)Frei, Marlene. Dieter Roth, André Thomkins. Zürich: Galerie & Edition Marlene Frei, 2008.
Cita MLA (8th ed.)Frei, Marlene. Dieter Roth, André Thomkins. Galerie & Edition Marlene Frei, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.