APA (7th ed.) Citation

National Gallery (Great Britain) & Cowling, E. (2009). Picasso : challenging the past / Elizabeth Cowling ... [et al.]: Challenging the past. National Gallery.

Chicago Style (17th ed.) Citation

National Gallery (Great Britain) and Elizabeth Cowling. Picasso : Challenging the Past / Elizabeth Cowling ... [et Al.]: Challenging the Past. London: National Gallery, 2009.

MLA (9th ed.) Citation

National Gallery (Great Britain) and Elizabeth Cowling. Picasso : Challenging the Past / Elizabeth Cowling ... [et Al.]: Challenging the Past. National Gallery, 2009.

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