CONCRETE SPIRIT .. (1995). Concrete spirit: The architecture of Ralph Allen. Rockport.
Čikaški stil citiranja (17. izdanje)CONCRETE SPIRIT .. Concrete Spirit: The Architecture of Ralph Allen. Massachusetts: Rockport, 1995.
MLA način citiranja (9. izdanje)CONCRETE SPIRIT .. Concrete Spirit: The Architecture of Ralph Allen. Rockport, 1995.
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