APA (7th ed.) Citation

Sotheby's (London). (1989). Silver, portrait miniatures and objects of vertu: Day of sale Thursday 9th February 1989. Sotheby's.

Chicago Style (17th ed.) Citation

Sotheby's (London). Silver, Portrait Miniatures and Objects of Vertu: Day of Sale Thursday 9th February 1989. London: Sotheby's, 1989.

MLA (9th ed.) Citation

Sotheby's (London). Silver, Portrait Miniatures and Objects of Vertu: Day of Sale Thursday 9th February 1989. Sotheby's, 1989.

Warning: These citations may not always be 100% accurate.