APA (7th ed.) Citation

National Portrait Gallery (Great Britain) & Bradford, S. (1994). The Sitwells and the arts of the 1920s and 1930s / [essays by Sarah Bradford ... et al.]. National Portrait Gallery.

Chicago Style (17th ed.) Citation

National Portrait Gallery (Great Britain) and Sarah Bradford. The Sitwells and the Arts of the 1920s and 1930s / [essays by Sarah Bradford ... Et Al.]. London: National Portrait Gallery, 1994.

MLA (9th ed.) Citation

National Portrait Gallery (Great Britain) and Sarah Bradford. The Sitwells and the Arts of the 1920s and 1930s / [essays by Sarah Bradford ... Et Al.]. National Portrait Gallery, 1994.

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