APA (7th ed.) Zitazioa
Sotheby's. (1999). Sotheby's: London, Friday 10 December 1999 : Continental Books and Manuscripts. Sotheby's.
Chicago Style (17th ed.) Zitazioa
Sotheby's. Sotheby's: London, Friday 10 December 1999 : Continental Books and Manuscripts. Londres, Inglaterra: Sotheby's, 1999.
MLA (9th ed.) Zitazioa
Sotheby's. Sotheby's: London, Friday 10 December 1999 : Continental Books and Manuscripts. Sotheby's, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.