APA (7th ed.) Citation

Sotheby's (Firm). (1988). Impressionist and modern drawings and watercolours. Sotheby's.

Chicago Style (17th ed.) Citation

Sotheby's (Firm). Impressionist and Modern Drawings and Watercolours. London: Sotheby's, 1988.

MLA (9th ed.) Citation

Sotheby's (Firm). Impressionist and Modern Drawings and Watercolours. Sotheby's, 1988.

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