APA (7th ed.) Citation

Sotheby's (Firm). (1970). Important nineteenth-century and modern etchings, lithographs and woodcuts - March 1970. Sotheby.

Chicago Style (17th ed.) Citation

Sotheby's (Firm). Important Nineteenth-century and Modern Etchings, Lithographs and Woodcuts - March 1970. London: Sotheby, 1970.

MLA (9th ed.) Citation

Sotheby's (Firm). Important Nineteenth-century and Modern Etchings, Lithographs and Woodcuts - March 1970. Sotheby, 1970.

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