GIBLIN, J. C. (1981). The Skyscraper Book. Thomas Y. Crowell Jr. Books.
Lua i Stíl Chicago (17ú heag.)GIBLIN, James Cross. The Skyscraper Book. Thomas Y. Crowell Jr. Books, 1981.
Lua MLA (8ú heag.)GIBLIN, James Cross. The Skyscraper Book. Thomas Y. Crowell Jr. Books, 1981.
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