Ypma, H. (2006). Hip hotels, Paris. Thames and Hudson.
Lua i Stíl Chicago (17ú heag.)Ypma, Herbert. Hip Hotels, Paris. London: Thames and Hudson, 2006.
Lua MLA (8ú heag.)Ypma, Herbert. Hip Hotels, Paris. Thames and Hudson, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.