Tomkins, C. (2019). Sunbaked Klee: Paul Klee. The lives of artists : Collected Profildes.
Lua i Stíl Chicago (17ú heag.)Tomkins, Calvin. "Sunbaked Klee: Paul Klee." The Lives of Artists : Collected Profildes 2019.
Lua MLA (8ú heag.)Tomkins, Calvin. "Sunbaked Klee: Paul Klee." The Lives of Artists : Collected Profildes, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.