Sotheby's. (1997). German and Austrian 20th century art. Sotheby's.
Style de citation ChicagoSotheby's. German and Austrian 20th Century Art. London: Sotheby's, 1997.
Style de citation MLASotheby's. German and Austrian 20th Century Art. Sotheby's, 1997.
Attention : ces citations peuvent ne pas être correctes à 100%.
