Vriends, A. (2000). Fortuyn / O'Brien: Works and projects. Ludion.
Lua i Stíl Chicago (17ú heag.)Vriends, Arno. Fortuyn / O'Brien: Works and Projects. Amsterdam [u.a.]: Ludion, 2000.
Lua MLA (8ú heag.)Vriends, Arno. Fortuyn / O'Brien: Works and Projects. Ludion, 2000.
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