APA (7th ed.) Citation

Sotheby & Co. (1950). Catalogue of valuable printed books important literary manuscripts, autograph letters ... which will be sold by auction ... on Monday, the 3rd of April, 1950. Sotheby & Co.

Chicago Style (17th ed.) Citation

Sotheby & Co. Catalogue of Valuable Printed Books Important Literary Manuscripts, Autograph Letters ... Which Will Be Sold by Auction ... on Monday, the 3rd of April, 1950. London: Sotheby & Co, 1950.

MLA (9th ed.) Citation

Sotheby & Co. Catalogue of Valuable Printed Books Important Literary Manuscripts, Autograph Letters ... Which Will Be Sold by Auction ... on Monday, the 3rd of April, 1950. Sotheby & Co, 1950.

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