APA (7th ed.) Citation

Sotheby's. (2013). Art Contemporain: Evening Auction : London, 12 February 2013, at 7 pm. Sotheby's.

Chicago Style (17th ed.) Citation

Sotheby's. Art Contemporain: Evening Auction : London, 12 February 2013, at 7 Pm. [London]: Sotheby's, 2013.

MLA (9th ed.) Citation

Sotheby's. Art Contemporain: Evening Auction : London, 12 February 2013, at 7 Pm. Sotheby's, 2013.

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