APA (7th ed.) Citation

Sotheby's (Firm) & Sotheby's (Firm). (1989). Antiquities. Sotheby's.

Chicago Style (17th ed.) Citation

Sotheby's (Firm) and Sotheby's (Firm). Antiquities. London: Sotheby's, 1989.

MLA (9th ed.) Citation

Sotheby's (Firm) and Sotheby's (Firm). Antiquities. Sotheby's, 1989.

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