Diesenhouse, Susan. As Trump tower rises, worries pile up: Building battles challenges of nature, markets. Chicago Tribune. 2008-09-18, corrected 2008-09-28
skyscraperpage.com Karp, Gregory. United completed HQ move to Willis Tower. Chicago Tribune. July 23, 2013 [2014-05-02]. (原始内容存档于2014-02-27). Photo of Молдавская
Vista Tower, hello St. Regis. Chicago’s newest skyscraper has a new name, new hotel and a restaurant deal with Alinea Group.. Chicago Tribune. 2020-11-25