APA (7th ed.) Citation

Sotheby's (Firm). (1988). Ceramics by 20th century artists. Sotheby's.

Chicago Style (17th ed.) Citation

Sotheby's (Firm). Ceramics by 20th Century Artists. London: Sotheby's, 1988.

MLA (9th ed.) Citation

Sotheby's (Firm). Ceramics by 20th Century Artists. Sotheby's, 1988.

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