APA (7th ed.) Citation

Sotheby & Co. (1950). Catalogue of highly important printed books fine bindings, autograph letters and historical documents ... which will be sold by auction ... on Monday, the 30th of October, 1950. Sotheby & Co.

Chicago Style (17th ed.) Citation

Sotheby & Co. Catalogue of Highly Important Printed Books Fine Bindings, Autograph Letters and Historical Documents ... Which Will Be Sold by Auction ... on Monday, the 30th of October, 1950. London: Sotheby & Co, 1950.

MLA (9th ed.) Citation

Sotheby & Co. Catalogue of Highly Important Printed Books Fine Bindings, Autograph Letters and Historical Documents ... Which Will Be Sold by Auction ... on Monday, the 30th of October, 1950. Sotheby & Co, 1950.

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