APA (7th ed.) Citation

Penrose, R. (1974). Picasso's portrait of Kahnweiler.

Chicago Style (17th ed.) Citation

Penrose, Roland. Picasso's Portrait of Kahnweiler. 1974.

MLA (9th ed.) Citation

Penrose, Roland. Picasso's Portrait of Kahnweiler. 1974.

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