Kleinsimlinghaus, R. (1998). Collectors classics: Modern and contemporary art.
Lua i Stíl Chicago (17ú heag.)Kleinsimlinghaus, Ralph. Collectors Classics: Modern and Contemporary Art. Düsseldorf, 1998.
Lua MLA (8ú heag.)Kleinsimlinghaus, Ralph. Collectors Classics: Modern and Contemporary Art. 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.