Cita APA (7th ed.)

Skynner, P., Wallace, M., & Tartaro, G. World Trade Center: The challenge of the future.

Cita Chicago (17th ed.)

Skynner, Peter, Mike Wallace, i Giorgio Tartaro. World Trade Center: The Challenge of the Future.

Cita MLA (8th ed.)

Skynner, Peter, et al. World Trade Center: The Challenge of the Future.