Lorentz.„Citigroup Center“. Chicago Architecture Info. — „Part of the reason for the spread at the bottom of the building is to incorporate a shopping mall and the Ogilvie Transportation Center, a busy suburban commuter railroad station.“. 31-iyul 2020-yilda asl nusxadan arxivlangan. Qaraldi: 16-iyul 2022-yil.
Lorentz.„Citigroup Center“. Chicago Architecture Info. — „Part of the reason for the spread at the bottom of the building is to incorporate a shopping mall and the Ogilvie Transportation Center, a busy suburban commuter railroad station.“. 31-iyul 2020-yilda asl nusxadan arxivlangan. Qaraldi: 16-iyul 2022-yil.