Skynner, P., Wallace, M., & Tartaro, G. World Trade Center: The challenge of the future.
Lua i Stíl Chicago (17ú heag.)Skynner, Peter, Mike Wallace, agus Giorgio Tartaro. World Trade Center: The Challenge of the Future.
Lua MLA (8ú heag.)Skynner, Peter, et al. World Trade Center: The Challenge of the Future.
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