APA (7th ed.) Citation

(1956). Catalogue of valuable printed books ..: Day of sale: 26th - 27th November 1956 .. Sotheby & Co.

Chicago Style (17th ed.) Citation

Catalogue of Valuable Printed Books ..: Day of Sale: 26th - 27th November 1956 .. London: Sotheby & Co, 1956.

MLA (9th ed.) Citation

Catalogue of Valuable Printed Books ..: Day of Sale: 26th - 27th November 1956 .. Sotheby & Co, 1956.

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