APA-viite (7. p.)
Kay, H., & Kahnweller, D. Picasso's world of children / by Helen Kay ; with an introduction by Daniel-Henry Kahnweiler.
Chicago-viite (17. p.)
Kay, Helen, ja Daniel-Henry Kahnweller. Picasso's World of Children / by Helen Kay ; with an Introduction by Daniel-Henry Kahnweiler.
MLA-viite (9. p.)
Kay, Helen, ja Daniel-Henry Kahnweller. Picasso's World of Children / by Helen Kay ; with an Introduction by Daniel-Henry Kahnweiler.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.