APA (7th ed.) Citation

Sotheby's (Firm). (1990). Post war and contemporary art, 30 November 1989. Catalogue. Sotheby's.

Chicago Style (17th ed.) Citation

Sotheby's (Firm). Post War and Contemporary Art, 30 November 1989. Catalogue. London: Sotheby's, 1990.

MLA (9th ed.) Citation

Sotheby's (Firm). Post War and Contemporary Art, 30 November 1989. Catalogue. Sotheby's, 1990.

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