Ruhrberg, K. (1986). Twentieth century art: Painting and sculpture in the Ludwig Museum. Rizzoli.
Style de citation Chicago (17e éd.)Ruhrberg, Karl. Twentieth Century Art: Painting and Sculpture in the Ludwig Museum. New York: Rizzoli, 1986.
Style de citation MLA (8e éd.)Ruhrberg, Karl. Twentieth Century Art: Painting and Sculpture in the Ludwig Museum. Rizzoli, 1986.
Attention : ces citations peuvent ne pas être correctes à 100%.