Catalogue of important nineteenth century and modern drawings ... which will be sold by auction by Sotheby & Co.
APA Citation
Sotheby & Co. (London, E. (1960). Catalogue of important nineteenth century and modern drawings ... which will be sold by auction by Sotheby & Co. London: The Firm.
MLA Citation
Sotheby & Co. (London, England). Catalogue of Important Nineteenth Century And Modern Drawings ... Which Will Be Sold by Auction by Sotheby & Co. London: The Firm, 1960.
Warning: These citations may not always be complete (especially for serials).