Cita APA (7th ed.)
Kay, H., & Kahnweller, D. Picasso's world of children / by Helen Kay ; with an introduction by Daniel-Henry Kahnweiler.
Cita Chicago (17th ed.)
Kay, Helen, i Daniel-Henry Kahnweller. Picasso's World of Children / by Helen Kay ; with an Introduction by Daniel-Henry Kahnweiler.
Cita MLA (9th ed.)
Kay, Helen, i Daniel-Henry Kahnweller. Picasso's World of Children / by Helen Kay ; with an Introduction by Daniel-Henry Kahnweiler.
Atenció: Aquestes cites poden no estar 100% correctes.