Vergne, P. (2006). Heart of Darkness: Kai Althoff, Ellen Gallagher and Edgar Cleijne, Thomas Hirschhorn. Walker Art Center.
Chicago-viite (17. p.)Vergne, Philippe. Heart of Darkness: Kai Althoff, Ellen Gallagher and Edgar Cleijne, Thomas Hirschhorn. Minneapolis: Walker Art Center, 2006.
MLA-viite (8. p.)Vergne, Philippe. Heart of Darkness: Kai Althoff, Ellen Gallagher and Edgar Cleijne, Thomas Hirschhorn. Walker Art Center, 2006.
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