German Embassy Building [online]. Encyclopaedia of Saint Petersburg [cit. 2008-08-11]. Dostupné online.
jstor.org
In Memoriam. Art Institute of Chicago Quarterly [online]. Art Institute of Chicago, February 1960 [cit. February 22, 2017]. Dostupné online.
nytimes.com
Compare Arthur Lubow's "The Contextualizer,"New York Times. April 6, 2008, p. 4; excerpt, "...a skyscraper that Nouvel (adapting a term from the artist Brâncuși) called the “tour sans fins,” or endless tower. Conceived as a kind of minaret alongside the squat, monumental Grande Arche de La Défense, the endless tower has taken on some of the mystique of Mies van der Rohe’s unbuilt Friedrichstrasse glass skyscraper of 1921. To obscure its lower end, the tower was designed to sit within a crater. Its facade, appearing to vanish in the sky, changed as it rose, from charcoal-colored granite to paler stone, then to aluminum and finally to glass that became increasingly reflective, all to enhance the illusion of dematerialization."
WELCH, Frank D., Ray, Landry. Photographs by Paul Hester. Foreword by Philip Johnson. Drawings by Brian Fitzsimmons. Philip Johnson & Texas. 1. vyd. Austin: University of Texas Press, 2000. Dostupné online. ISBN0292791348. S. 318.Je zde použita šablona {{Cite book}} označená jako k „pouze dočasnému použití“.
