Cita APA (7a ed.)

Frei, G. (2004). Cy Twombly. Thomas Ammann Fine Art.

Cita Chicago Style (17a ed.)

Frei, Georg. Cy Twombly. Zurich: Thomas Ammann Fine Art, 2004.

Cita MLA (8a ed.)

Frei, Georg. Cy Twombly. Thomas Ammann Fine Art, 2004.