Cita APA (7a ed.)

Schwenk, B. (2000). Robert Ryman. Ed. Tertium.

Cita Chicago Style (17a ed.)

Schwenk, Bernhart. Robert Ryman. Ostfildern: Ed. Tertium, 2000.

Cita MLA (8a ed.)

Schwenk, Bernhart. Robert Ryman. Ed. Tertium, 2000.