APA (7th ed.) Citation

Sotheby & Co. (1949). Catalogue of valuable printed books, important Western and Byzantine manuscripts .. Sotheby & Co.

Chicago Style (17th ed.) Citation

Sotheby & Co. Catalogue of Valuable Printed Books, Important Western and Byzantine Manuscripts .. London: Sotheby & Co, 1949.

MLA (9th ed.) Citation

Sotheby & Co. Catalogue of Valuable Printed Books, Important Western and Byzantine Manuscripts .. Sotheby & Co, 1949.

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