APA (7th ed.) Citation

Sotheby & Co. (1949). Catalogue of printed books ... which will be sold by auction ... on Monday, the 16th of May, 1949. Sotheby & Co.

Chicago Style (17th ed.) Citation

Sotheby & Co. Catalogue of Printed Books ... Which Will Be Sold by Auction ... on Monday, the 16th of May, 1949. London: Sotheby & Co, 1949.

MLA (9th ed.) Citation

Sotheby & Co. Catalogue of Printed Books ... Which Will Be Sold by Auction ... on Monday, the 16th of May, 1949. Sotheby & Co, 1949.

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