APA (7th ed.) Citation

Sotheby's (Firm). (1989). Impressionist and modern drawings and watercolors. Sotheby's.

Chicago Style (17th ed.) Citation

Sotheby's (Firm). Impressionist and Modern Drawings and Watercolors. New York, N.Y.: Sotheby's, 1989.

MLA (9th ed.) Citation

Sotheby's (Firm). Impressionist and Modern Drawings and Watercolors. Sotheby's, 1989.

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