APA (7th ed.) Citation

Sotheby's (Firm). (1989). Ceramics and glass by 20th century artists ans studio potters. Sotheby's.

Chicago Style (17th ed.) Citation

Sotheby's (Firm). Ceramics and Glass by 20th Century Artists Ans Studio Potters. London: Sotheby's, 1989.

MLA (9th ed.) Citation

Sotheby's (Firm). Ceramics and Glass by 20th Century Artists Ans Studio Potters. Sotheby's, 1989.

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