APA (7th ed.) Citation

Sotheby's (Firm). (1968). Catalogue of important old master engravings, etchings and woodcuts. Sotheby & Co Ltd.

Chicago Style (17th ed.) Citation

Sotheby's (Firm). Catalogue of Important Old Master Engravings, Etchings and Woodcuts. London: Sotheby & Co Ltd, 1968.

MLA (9th ed.) Citation

Sotheby's (Firm). Catalogue of Important Old Master Engravings, Etchings and Woodcuts. Sotheby & Co Ltd, 1968.

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