APA (7th ed.) Zitazioa
Sotheby's. (2000). Sotheby's: London, Wednesday 18 October 2000 : German and Austrian Art. Sotheby's.
Chicago Style (17th ed.) Zitazioa
Sotheby's. Sotheby's: London, Wednesday 18 October 2000 : German and Austrian Art. Londres, Inglaterra: Sotheby's, 2000.
MLA (9th ed.) Zitazioa
Sotheby's. Sotheby's: London, Wednesday 18 October 2000 : German and Austrian Art. Sotheby's, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.