APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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