Gibbs, M. (2003). Eco Tower: Offices, Bonn, Germany : Architekten: Murphy / Jahn. The Architectural Review.
Chicago-viite (17. p.)Gibbs, Mary. "Eco Tower: Offices, Bonn, Germany : Architekten: Murphy / Jahn." The Architectural Review 2003.
MLA-viite (8. p.)Gibbs, Mary. "Eco Tower: Offices, Bonn, Germany : Architekten: Murphy / Jahn." The Architectural Review, 2003.
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